Journal articles: 'Weaver-birds'

1

White, C. M. N. "WEAVER BIRDS AT LAKE MWERU." Ibis 93, no. 4 (April 3, 2008): 626–27. http://dx.doi.org/10.1111/j.1474-919x.1951.tb05464.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Attwell., R. I. G. "CROCODILES FEEDING ON WEAVER-BIRDS." Ibis 96, no. 3 (April 3, 2008): 485–86. http://dx.doi.org/10.1111/j.1474-919x.1954.tb02342.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Walsh, Patrick T., Mike Hansell, Wendy D. Borello, and Susan D. Healy. "Repeatability of nest morphology in African weaver birds." Biology Letters 6, no. 2 (October 21, 2009): 149–51. http://dx.doi.org/10.1098/rsbl.2009.0664.

Full text

Abstract:

It is generally assumed that birds build nests according to a genetic ‘template’, little influenced by learning or memory. One way to confirm the role of genetics in nest building is to assess the repeatability of nest morphology with repeated nest attempts. Solitary weaver birds, which build multiple nests in a single breeding season, are a useful group with which to do this. Here we show that repeatability of nest morphology was low, but significant, in male Southern Masked weaver birds and not significant in the Village weavers. The larger bodied Village weavers built larger nests than did Southern Masked weavers, but body size did not explain variation in Southern Masked weaver nest dimensions. Nests built by the same male in both species got shorter and lighter as more nests were constructed. While these data demonstrate the potential for a genetic component of variation in nest building in solitary weavers, it is also clear that there remains plenty of scope in both of these species for experience to shape nest construction.

APA, Harvard, Vancouver, ISO, and other styles

4

Oschadleus, H. Dieter. "Birds adopting weaver nests for breeding in Africa." Ostrich 89, no. 2 (December 20, 2017): 131–38. http://dx.doi.org/10.2989/00306525.2017.1411403.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

MOREAU, R. E. "CONSPECTUS AND CLASSIFICATION OF THE PLOCEINE WEAVER-BIRDS." Ibis 102, no. 2 (June 28, 2008): 298–321. http://dx.doi.org/10.1111/j.1474-919x.1960.tb07116.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

MOREAU, R. E. "CONSPECTUS AND CLASSIFICATION OF THE PLOCEINE WEAVER-BIRDS." Ibis 102, no. 3 (June 28, 2008): 443–71. http://dx.doi.org/10.1111/j.1474-919x.1960.tb08419.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Harvey, Mark S., Patricia C. Lopes, Gregory R. Goldsmith, Ali Halajian, Mia J. Hillyer, and Joel A. Huey. "A novel symbiotic relationship between sociable weaver birds (Philetairus socius) and a new cheliferid pseudoscorpion (Pseudoscorpiones : Cheliferidae) in southern Africa." Invertebrate Systematics 29, no. 5 (2015): 444. http://dx.doi.org/10.1071/is15027.

Full text

Abstract:

Birds harbour a wide array of other taxa in their nests or in their plumage, which either have an ectoparasitic or commensal relationship with the host. We report on the discovery of a cheliferid pseudoscorpion found in the plumage and nests of the sociable weaver bird (Philetairus socius) in southern Africa. The nests of these communal birds are the largest of any bird, and may contain up to 500 individuals. The pseudoscorpion is likely to have a mutualistic relationship with the birds, most likely preying on other small invertebrates in the nests. Molecular data derived from two populations of the pseudoscorpion found divergence levels of 1.1% in cytochrome oxidase 1 (CO1), and an analysis of CO1 and two rRNA genes (18S and 28S) found a close relationship with Chelifer and Parachelifer in the tribe Cheliferini, which is supported by the morphology of the male genitalia. The molecular analysis also suggests that Beierius may not belong to the Cheliferini. The pseudoscorpion found in association with the sociable weaver represents a new genus and species, Sociochelifer metoecus Harvey, sp. nov.

APA, Harvard, Vancouver, ISO, and other styles

8

Butler, A. G. "On Changes of Plumage in some of the Typical Weaver-birds." Ibis 39, no. 3 (April 3, 2008): 359–61. http://dx.doi.org/10.1111/j.1474-919x.1897.tb03282.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Crook, John Hurrell. "A COMPARATIVE ANALYSIS OF NEST STRUCTURE IN THE WEAVER BIRDS (PLOCEINAE)." Ibis 105, no. 2 (April 3, 2008): 238–62. http://dx.doi.org/10.1111/j.1474-919x.1963.tb02498.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Starostina, Aglaia. "The Prince’s Wings: Possible Origin of the Tale Type and its Early Chinese Variants." Journal of Ethnology and Folkloristics 15, no. 1 (June 1, 2021): 154–69. http://dx.doi.org/10.2478/jef-2021-0009.

Full text

Abstract:

Abstract The article* aims to clarify the relations between the early versions of tale type ATU 575. Examining the range of Chinese accounts concerning various wooden birds, the author concludes that two groups can be distinguished. The first consists of stories about flying wooden kite-like birds that are not used as vehicles, while in the second, we deal with wooden birds that can carry people. Records belonging to the second group and evidently having their origin in Indian and Central Asian folk tradition appear later in China. An attempt is made to restore possible outlines of the tale type’s ancestral stories. The article states that the tale of an enamoured weaver in the Panchatantra evolves from the structure of such an ancestral story.

APA, Harvard, Vancouver, ISO, and other styles

11

Walsh, J. Frank, and Brenda Walsh. "NESTING ASSOCIATION BETWEEN THE RED-HEADED WEAVER MALIMBUS RUBRICEPS AND RAPTORIAL BIRDS." Ibis 118, no. 1 (April 3, 2008): 106–8. http://dx.doi.org/10.1111/j.1474-919x.1976.tb02013.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

CROOK, JOHN HURRELL. "FIELD EXPERIMENTS ON THE NEST CONSTRUCTION AND REPAIR BEHAVIOUR OF CERTAIN WEAVER BIRDS." Proceedings of the Zoological Society of London 142, no. 2 (August 20, 2009): 217–55. http://dx.doi.org/10.1111/j.1469-7998.1964.tb04624.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Jamaluddin, Ahmad Fahri, Diah Risqiwati, and Fauzi Dwi Setiawan Sumadi. "Wireless Sensor Network Monitoring Suhu, Kelembaban, Getaran dan Bau dengan Sistem Pentransmisian MQTT." Jurnal Repositor 2, no. 12 (December 4, 2020): 1716. http://dx.doi.org/10.22219/repositor.v2i12.536.

Full text

Abstract:

AbstrakMemelihara burung merupakan salah satu hobi masyarakat Indonesia. Kebutuhan gizi dan nutrisi berupa protein pada burung dapat diperoleh dari suatu makanan salah satu makanan burung kroto atau telur semut rangrang. Pada budidaya semut rangrang, suhu dan kelembaban dapat mempengaruhi semut rangrang dalam bertelur. Masalah yang dihadapi saat ini pada budidaya semut rangrang adalah peternak tidak dapat memperkirakan kondisi suhu dan kelembaban. Mereka hanya memperkirakan suhu dan kelembaban dengan merasakan panas di dalam ruangan. Adapun masalah lain yang dihadapi adalah adanya getaran dan bau kimia di sekitar toples tempat semut rangrang di budidaya yang dapat membuat semut stress dan dapat menurunkan hasil produksi kroto. Dari permasalahan ini dilakukan penelitian dengan membuatan model pengatur suhu, kelembaban, getaran dan bau kimia dapat dimanfaatkan untuk menggunakan mikrokontroler Arduino UNO, sensor DHT11, sensor SW-420 dan sensor MQ-02 pada ruang budidaya semut rangrang dengan menggunakan system pentransmisian MQTT (Message Queuing Telemetry Transport). Alat ini akan mempermudah budidaya untuk mengatur nilai suhu, kelembaban, getaran dan bau kimia di dalam ruang budidaya tersebut. Alat ini menggunakan mist maker sebagai alat penghasil uap dan buzzer sebagai alarm secara otomatis agar budidaya semut rangrang stabil dan menghasilkan produksi kroto yang berkualitas. Hasil penelitian ini menunjukkan bahwa jarak mempengaruhi kuat sinyal dan delay atau selisih waktu transmisi data yang mana pada jarak 5m sampai jarak 7m sinyal semakin melemah dan rata-rata selisih waktu transmisi data betambah sekitar 5.1 sec hingga 5.9 sec. Hasil penelitian ini juga menunjukkan bahwa sistem pentrasmisian MQTT yang menggunakan ESP8266 memiliki rata-rata jumlah packet loss secara keseluruhan sebesar 35%.AbstractCaring of birds is one of society hobbies in Indonesia. Nutritional needs and nutrients in the form of proteins in birds can be obtained from food which is kroto bird food or weaver ant egg. In the weaver ant cultivation, temperature and humidity can affect the weaver ant in laying eggs. The problem of weaver ants cultivation is the farmer cannot predict the conditions of temperature and humidity. They only estimate the temperature and humidity by feeling heat in the room. The other problem faced is the presence of vibration and chemical odors around the jar where the weaver ants process of cultivation can make they stress and reduce the production of kroto. From this problem, research is carried out by making a models of temperature, humidity, vibration and chemical odors can be ultilized by using arduino uno microcontroller, DHT11 sensor, SW-420 sensor and MQ-02 sensor in the space of weaver ants cultivation by using the MQTT (Message Queuing Telemetry Transport) transmission system. This tool will make the cultivation easier to regulate the value of temperature, humidity, vibration and chemical odors in the space of cultivation. This tool uses a mist maker as steam generator and buzzer as an automatic alarm so that the cultivation of the weaver ants is stable and produces quality of kroto production. The results of this study indicate that the distance affects the signal strength and delay or difference in data transmission time which at a distance of 5m to a distance of 7m the signal weakens and the average difference in data transmission time increases around 5.1 sec to 5.9 sec. The results of this study also indicate that the MQTT transmission system that uses ESP8266 has an average number of packet loss overall of 35%.

APA, Harvard, Vancouver, ISO, and other styles

14

BROSSET, A. "SOCIAL ORGANIZATION AND NEST-BUILDING IN THE FOREST WEAVER BIRDS OF THE GENUS MALIMBUS (PLOCEINAE)." Ibis 120, no. 1 (April 3, 2008): 27–37. http://dx.doi.org/10.1111/j.1474-919x.1978.tb04996.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Ekane Maurice, Melle, Kato Samuel Namuene, Ewane Divine, Mbole Veronique, and Agborta Sylvie Oyong. "A Survey of Weaver-birds’ Crop-raiding Behavioral Activity in Buea Municipality, Southwest Region, Cameroon." Plant 8, no. 4 (2020): 108. http://dx.doi.org/10.11648/j.plant.20200804.14.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Nsor, Collins Ayine, and Edward Adzesiwor Obodai. "Environmental Determinants Influencing Seasonal Variations of Bird Diversity and Abundance in Wetlands, Northern Region (Ghana)." International Journal of Zoology 2014 (2014): 1–10. http://dx.doi.org/10.1155/2014/548401.

Full text

Abstract:

The study assessed major environmental determinants influencing bird community in six wetlands over a 2-year period. A combination of visual and bird sounding techniques was used to determine the seasonal variations in bird abundance, while ordination techniques were performed to determine the influence of environmental factors on bird assemblage. A total of 1,169 birds from 25 species and 885 individuals from 23 species were identified in the wet and dry season, respectively. The shallow close marshes supported the greatest number of birds (P<0.05) compared to the riparian wetlands. Bird diversity was significantly higher in the wet season than in the dry season (F=4.101,P<0.05). Cattle egret (Bubulcus ibis) and marsh warbler (Acrocephalus palustris) were the most abundant. Using the IUCN “Red List” database guide, we noted that 96.2% of birds identified were least concern (LC). The yellow weaver bird (Ploceous megarhrynchus) was the only vulnerable species (VU) and represented 3.8%. From the three variables tested, bushfire and farming practices were the major threats and cumulatively explained 15.93% (wet season) and 14.06% (dry season) variations in bird diversity and abundance. These findings will help wetland managers design conservation measures to check current threats on birds from becoming vulnerable in the future.

APA, Harvard, Vancouver, ISO, and other styles

17

Hachour, K., N. Talmat-Chaouchi, and R. Moulaï. "Diversity and Structure of Nesting Birds in the Coastal Riparian Zones of Great Kabylia in Algeria." Zoodiversity 55, no. 4 (2021): 351–60. http://dx.doi.org/10.15407/zoo2021.04.351.

Full text

Abstract:

The study of the nesting birds of the coastal riparian zones in Great Kabylia in Algeria, allowed us to identify 45 species of birds, belonging to 12 orders and 26 families. The richest site in terms of species is Takdempt (31 species). The lowest diversity is noted at the level of Boudouaou wadi with 16 species. The values of the Shannon-Weaver diversity index (H') for all sites are quite high (≥3 bits). Concerning the global abundance of avifauna, the site that represents the highest centesimal frequency is that of Takdempt (20.87 %) and this is due to the presence of a colony of Bubulcus ibis (Linnaeus, 1758). The bird communities of the sampled sites are not identical, but the degree of similarity, in general, is quite high (≥ 50 %). The main factors controlling the diversity and the structure of the avifauna of Great Kabylia coastal riparian zones are represented by vertical and horizontal vegetation structure

APA, Harvard, Vancouver, ISO, and other styles

18

Coombs, G., S. Mitchell, and C. Peter. "Pollen as a reward for birds. The unique case of weaver bird pollination in Strelitzia reginae." South African Journal of Botany 73, no. 2 (April 2007): 283. http://dx.doi.org/10.1016/j.sajb.2007.02.031.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Malik, Shikha, Rohit Kumar Pandey, and Sanjay Kumar Bhardwaj. "Effect of food on seasonal response in Indian weaver bird (Ploceus philippinus)." Environment Conservation Journal 15, no. 3 (December 20, 2014): 19–28. http://dx.doi.org/10.36953/ecj.2014.15303.

Full text

Abstract:

We investigated the effect of normal (adlib) and supplementary food on body mass, testes growth, moult and plumage color in Indian weaver birds. Birds intially were kept under natural day length (NDL) and then exposed to short day lengths (8 h light: 16 h darkness) for at least 2 weeks before being subjected to an experimental regime. They were divided into five groups (n=4 each), groups 1 and 2 were held under SDL (Short day length -8L: 16D), groups 3 and 4 were exposed to LDL (Long daylength-16L: 8D) and simultaneously group 5 held under natural day length, served as control. One group of SDL (Group 2) and LDL (group 3) as well as group 5 (NDL) were fed on grain with supplement proteinaceous food and groups 2 and 4 were fed on adlib food (grain) only. Observations on body mass, testis growth, bodymolt and plumage color were recorded bi weekly. A significant change in the body mass under both photoperiodic groups (SDL; group 2 and LDL; group 4), but the testicular growth was noticed on long day lengths (LDL: 16L: 8D) and control (NDL) group. However the supplement food modulated the testes growth, body molt, beak pigmentation and body plumage regeneration. Early feather regeneration was found in supplementary food group under long day length. It is suggested that the supplementary food, affects the timing of the development of secondary sexual characteristics.

APA, Harvard, Vancouver, ISO, and other styles

20

Cheng, Yi-Ru, Dustin R. Rubenstein, and Sheng-Feng Shen. "Nest predation predicts infanticide in a cooperatively breeding bird." Biology Letters 15, no. 8 (August 2019): 20190314. http://dx.doi.org/10.1098/rsbl.2019.0314.

Full text

Abstract:

In cooperatively breeding species, social conflict is typically assumed to underlie destructive behaviours like infanticide. However, an untested alternative hypothesis in birds is that infanticide in the form of egg tossing may simply be a parental response to partial nest predation representing a life-history trade-off. We examined egg tossing behaviour in the colonial and cooperatively breeding grey-capped social weaver ( Pseudonigrita arnaudi ), a plural breeder in which pairs nest separately, often in the same tree. Using infrared nest cameras, we found that 78% of the tossing events from 2012 to 2017 were committed by parents, suggesting that social conflict is unlikely to be the main reason underlying egg tossing in this species. Instead, reductions in clutch size due to both natural and experimentally simulated predation induced parental egg tossing. Our study suggests that destructive behaviour in cooperatively breeding birds can be shaped by a variety of mechanisms beyond social conflict and that alternative hypotheses must be considered when studying the adaptive significance of infanticide in group-living species.

APA, Harvard, Vancouver, ISO, and other styles

21

Kawashima, Seiichiro, Kazuyoshi Tsutsui, R. N. Saxena, and Susumu Ishii. "Photoperiodic Regulation of Follicle-Stimulating Hormone Binding to Gonads and of Plasma Gonadotropin Concentrations in Indian Weaver Birds." General and Comparative Endocrinology 92, no. 2 (November 1993): 250–59. http://dx.doi.org/10.1006/gcen.1993.1161.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

DIN, N. A. "Resource sharing and niche overlap in some weaver birds of the Genus Ploceus and Malimbus at Ife, Nigeria." African Journal of Ecology 29, no. 1 (March 1991): 43–53. http://dx.doi.org/10.1111/j.1365-2028.1991.tb00819.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Rymer, Tasmin L., Robert L. Thomson, and Martin J. Whiting. "At home with the birds: Kalahari tree skinks associate with sociable weaver nests despite African pygmy falcon presence." Austral Ecology 39, no. 7 (May 13, 2014): 839–47. http://dx.doi.org/10.1111/aec.12152.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Tanko, Dauda, and Rita Chinweuba. "Birds species composition and abundance of a relativelly undisturbed vegetation at Mount Pati, Lokoja, Kogi State." Brazilian Journal of Biological Sciences 6, no. 12 (2019): 271–82. http://dx.doi.org/10.21472/bjbs.061225.

Full text

Abstract:

Avifauna of a relatively undisturbed vegetation at Mount Patti of Lokoja was surveyed from January to June, 2018. Line transect and point count techniques were used for data collection. This was done by weekly visits to the site between 6:00 h and 10:00 h of the day. Bird identification was done with the aid of a pair of binoculars, Field Guide of birds of western Africa and recorded bird calls. Monthly variation and season variation in bird composition and abundance were compared using Shannon-Wiener diversity index and equitability index. There were 39 species in 21 families encountered during the survey. The Family Nectarinidae had the highest number of 5 species, followed by Columbidae and Estrildidae with 4 species each. A total of 1,148 individuals were encountered during the six months survey with village weaver having the highest encountered rate of 107 while yellow-throated Long-claw had the least encountered rate of 4 individuals. Fluctuation was observed in the monthly encountered rate of the birds. Diversity and equitability indices had their highest values of 5.24 and 1.51 in January. More birds (696) were encountered in the wet season than the dry season (452). Four species were seen only in the wet season. Species effort curve showed that there are more species to be discover. The number of species encountered in this study revealed that the mountain is rich composition of bird species, even though the site seems to favour species that show preference to disturbed areas. The on-going anthropogenic activities probably paved way to these species to move in. Monthly and seasonal fluctuation of bird species diversity and abundance may be due to a combination of physical and biological factors. The physical and biological factors observed at the site which we speculate could be reasons for the observed fluctuations include slash and burnt system of farming, fuel-wood harvesting, intensive sporting activities creation of foot paths etc. High encountered rate indicate abundance and high activity level of the species. The village weaver was the most encountered species probably because they are known to be lousy, move in flocks and breed in colonies. In view of the rich composition and abundance of bird species on Mount Patti and the site being a suitable breeding site for the weavers. We recommend further study of the place as there are yet more species to be discovered as indicated by the species effort curve. There is need for conservation procedures to be initiated at the place and this study should serve as a baseline to initiate such programme by the state government.

APA, Harvard, Vancouver, ISO, and other styles

25

WANYONYI, STELLAH NEKESA, EVANS MUNGAI MWANGI, and NATHAN GICHUKI. "Effect of habitat disturbance on distribution and abundance of Papyrus endemic birds in Sio Port Swamp, Western Kenya." Bonorowo Wetlands 8, no. 2 (December 1, 2018): 51–62. http://dx.doi.org/10.13057/bonorowo/w080201.

Full text

Abstract:

Wanyonyi SN, Mwangi EM, Gichuki N. 2018. Effect of habitat disturbance on distribution and abundance of Papyrus endemic birds in Sio Port Swamp, Western Kenya. Bonorowo Wetlands 2: 49-60. Papyrus (Cyperus papyrus) swamps are found patchily around the shores of Lake Victoria mainly along river inflows. The objective of this study was to investigate the distinct forms of habitat disturbance and their implications on the distribution and abundance of papyrus endemic birds. Data on bird counts, habitat quality, and types of disturbance were collected for six months, from October 2013 to March 2014. Total bird counts were established using Timed Species Count (TSC) and playback call technique at every fixed point. The researcher waited for 1 minute, calls of the study species were played to elicit a response of the secretive papyrus endemic birds. The number of each bird's species seen or heard within a radius of 25 meters was recorded for the next 9 minutes before transferring to the next point count. Habitat quality such as height, density, and level of maturity was determined in 1 m2 plots along transverse transects. Opportunistic observations were made to establish forms of disturbance present during vegetation and bird surveys. Papyrus endemic birds were highly distributed in sites with pure papyrus (55.58%) than in places with mixed plants (44.42%). The abundance of three endemic birds, White-winged Swamp-warbler, Papyrus Gonolek, and Northern Brown-throated Weaver, was significantly different in mixed and pure papyrus sites. However, the abundance of Greater Swamp-warbler was not significantly different in mixed and pure papyrus sites in Sio Port Swamp during the study period. Forms of habitat disturbance established were vegetation clearing and invasion by terrestrial and aquatic plants. As many as 76.47% of papyrus vegetation were young and regenerated (0-2 m high), 19.65% were immature papyruses (2-4 m) whereas 3.88% were tall mature papyruses (4-6 m high). The abundance of papyrus endemic birds was positively and significantly correlated with the density of vegetation in height ranging from 4-6 m. Thus, any change in papyrus density changed the abundance of papyrus endemic birds. Advance management of papyrus clearing is necessary for the long-term conservation of biodiversity.

APA, Harvard, Vancouver, ISO, and other styles

26

Huh, Man Kyu. "Monitoring Change in Biodiversity of Kingdom Animalia Though Composite Indices at the Jungchon Stream, Korea." European Journal of Engineering Research and Science 3, no. 10 (October 16, 2018): 31–37. http://dx.doi.org/10.24018/ejers.2018.3.10.930.

Full text

Abstract:

Species diversity varies dramatically among regions and among localities within regions.This study is to investigate the biodiversity of animal kingdoms at four regions on the Jungchon Stream in Korea. Mammals accounted for nine taxa for four seasons within the studied areas. Invertebrates exhibited the greatest species diversity with 17 taxa identified, followed by birds (Aves) (15 taxa). The mean numbers of species were 40 taxa within the St. A, 40 taxa within the St. B, 41 taxa within the St. C, and 44 taxa within the St. D. Many individuals of fish and invertebrates were found in this area because the abundant food and water supply by junction of two rivers.The mean of Shannon-Weaver index (H´) of diversity for mammals was varied from 1.170 (St. D) to 2.002 (St. A).St. A was also considerable high H´ in birds andreptiles/amphibians. Berger-Parker’s index (BPI) for mammalswas varied from 0.201 (Station A) to 0.294 (Station C).For the community as a whole, the values of ß-diversity were the low (from 0.170 for St. D to 0.232 for St. C). Clustering of four stations, using the NJ algorithm, was performed based on the matrix of calculated distances. Four stations of the Jungchon Stream were well separated each other.

APA, Harvard, Vancouver, ISO, and other styles

27

Collias, N. E., E. C. Collias, C. H. Jacobs, C. R. Cox, and F. A. McAlary. "Old Age and Breeding Behavior in a Tropical Passerine Bird Ploceus cucullatus under Controlled Conditions." Auk 103, no. 2 (April 1, 1986): 408–19. http://dx.doi.org/10.1093/auk/103.2.408.

Full text

Abstract:

Abstract Many tropical species of passerine birds have potentially long reproductive lives in both nature and aviaries, but rate of breeding by old individuals may eventually decline. A group of individually color-banded African Village Weavers (Ploceus cucullatus), a polygynous species, was kept in aviaries at Los Angeles for 22 years. At 14-18 years of age, old males built significantly fewer nests per year, displayed to females less often, had fewer mates, and generally fathered fewer clutches than did the same males when 9-13 years old. One male reached 24 years of age, when he rarely sang and no longer wove when provided with nest materials. The females, after reaching "middle age" (9-13 yr), laid significantly fewer eggs per year, and still fewer during "old age" (14-18 yr). When 14 or more years old, weavers of both sexes rested much more than did young adults 4-6 years old in the same aviary. Individuals differed greatly in the decline of breeding behavior with age. Some individual Village Weavers bred at a surprisingly great age for passerine birds, e.g. fertile copulations by one 19-year-old male and by one 18-year-old female. These seem to be the oldest breeding ages yet recorded for any small passerine bird. Long reproductive life of a small number of individuals that contribute disproportionately to the next generation would give a selection pressure for longevity, and also could help explain the evolution of small clutch size (2-3 eggs) in the Village Weaver and in many other tropical birds.

APA, Harvard, Vancouver, ISO, and other styles

28

Narasimhacharya, A. V. R. L., V. C. Kotak, and P. J. Sharp. "Environmental and hormonal interactions in the regulation of seasonal breeding in free-living male Indian baya weaver birds (Ploceus philippinus)." Journal of Zoology 215, no. 2 (June 1988): 239–48. http://dx.doi.org/10.1111/j.1469-7998.1988.tb04898.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Tsutsui, Kazuyoshi, Tanushri Saxena, and Rajendra N. Saxena. "Effects of season and photoperiod on the plasma and intratesticular testosterone levels in Indian weaver birds inhabiting the subtropical zone." Journal of Experimental Zoology 270, no. 4 (November 15, 1994): 381–87. http://dx.doi.org/10.1002/jez.1402700407.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Collias, Nicholas E. "Vocal Signals of the Village Weaver: A Spectrographic Key and the Communication Code." Condor 102, no. 1 (February 1, 2000): 60–80. http://dx.doi.org/10.1093/condor/102.1.60.

Full text

Abstract:

AbstractVocal signals of a species are social signals and guides to its social life. Sound spectrograms were made of 21 of the 26 vocal signals in the extensive vocal repertoire of the African Village Weaver (Ploceus cucullatus). A spectrographic key to vocal signals helps make these signals comparable for different investigators. Short-distance contact calls are given in favorable situations and are generally characterized by low amplitude and great brevity of notes. Alarm cries are longer, louder, and often strident calls with much energy at high frequencies, whereas threat notes, also relatively long and harsh, emphasize lower frequencies. Each male displays his newest nest in a colony with an individually distinctive call to unmated females. The most harmonic calls of the species include a loud call by a male when an unmated female first enters his nest, and also very soft, brief notes given by parent birds to attract a fledgling. Males use somewhat different songs to defend territory, for courtship, and for advertisement. Application of Darwin's (1872) principle of antithesis suggests that vocal signals are composed of basic elements that vary in duration, frequency, loudness, and tonality of notes. These variations can be arranged in pairs of opposite extremes serving to reduce ambiguity in signals, in effect a communication code. At the same time, other selection pressures can enter in according to circumstances to modify the expression of this basic code in evolution.

APA, Harvard, Vancouver, ISO, and other styles

31

Jayasimhan, Chaithra Shree, and Pramod Padmanabhan. "Diversity and temporal variation of the bird community in paddy fields of Kadhiramangalam, Tamil Nadu, India." Journal of Threatened Taxa 11, no. 10 (August 25, 2019): 14279–91. http://dx.doi.org/10.11609/jott.4241.11.10.14279-14291.

Full text

Abstract:

Paddy, a major food crop of India, provides a variety of habitats in a short period of time and supports diverse organisms. Paddy fields also harbour many birds with varying species composition across the different cultivation phases of paddy. This study, conducted in the paddy fields of Kadhiramangalam, Tamil Nadu, India, recorded the bird community composition there during the various cultivation phases of paddy. The bird community data was analysed and a total of 87 bird species were recorded from the study area belonging to 41 families and 13 orders. The growth phase (PS 3) is the most diverse phase. The bird composition showed a significant variation across the paddy cultivation phases with overall average dissimilarity of 71.41%. The patterns shown by graphs of bird species composition across the paddy cultivation phases is based on guild, habitat usage and order overlap and elucidates that the change in bird community composition temporally can be attributed to the niche variability across the paddy cultivation phases. The major species contributing to these changes observed are Black-headed Munia, Baya Weaver, Common Sandpiper, Barn Swallow, Common Myna, and Black Drongo in this region.

APA, Harvard, Vancouver, ISO, and other styles

32

Tsutsui, Kazuyoshi, Seiichiro Kawashima, R. N. Saxena, and Susumu Ishii. "Annual changes in the binding of follicle-stimulating hormone to gonads and plasma gonadotropin concentrations in Indian weaver birds inhabiting the subtropical zone." General and Comparative Endocrinology 88, no. 3 (December 1992): 444–53. http://dx.doi.org/10.1016/0016-6480(92)90239-g.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Quader, Suhel. "What Makes a Good Nest? Benefits of Nest Choice to Female Baya Weavers (Ploceus Philippinus)." Auk 123, no. 2 (April 1, 2006): 475–86. http://dx.doi.org/10.1093/auk/123.2.475.

Full text

Abstract:

Abstract The nests of some birds are built exclusively by males and then displayed to females. In such species, one expects females to choose those nests that provide maximum safety to themselves and their offspring. What attributes of a nest should females use in making these choices? Here, I examine the correlates of nesting success in the Baya Weaver (Ploceus philippinus), a species in which males provide nests and little else. In particular, I examine which of two suites of nest attributes best predicts nesting success: nest location (which reflects male competitive ability) or nest architecture (which reflects male building skill). Because whether a nest has successfully fledged young is sometimes uncertain, I supplement generalized linear model analyses with survival analyses, which can incorporate ambiguity in nest fate. Together, these analyses reveal that nests built in thorny trees and woven with fine fiber have high success. Nesting success also increases with nest height and with thickness of the supporting branch. Overall, nest location is a slightly better predictor of success than nest architecture; this is consistent with previous findings that female choice of nests is influenced more by location than by architecture. ¿Qué Hace a un Nido un Buen Nido? Beneficios de la Selección de Nidos para las Hembras en Ploceus philippinus

APA, Harvard, Vancouver, ISO, and other styles

34

Mackworth-Praed, C. W., and C. H. B. Grant. "On the Generic Classification of the Weaver-birds of Eastern Africa placed in the Genus Ploceus in Selater's Syst. Av. AEthiop. ii. 1930, pp. 730-750." Ibis 88, no. 2 (April 3, 2008): 225–28. http://dx.doi.org/10.1111/j.1474-919x.1946.tb03478.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

MANRAL, Upma, and Faiyaz A. KHUDSAR. "Assessment of Wetland Water Quality and Avian Diversity of a Human-Modified Floodplain Wetland on River Yamuna." Notulae Scientia Biologicae 5, no. 1 (February 23, 2013): 25–33. http://dx.doi.org/10.15835/nsb519008.

Full text

Abstract:

Okhla Bird Sanctuary (OBS) is an Important Bird Area, which comes under the protected area network of Uttar Pradesh with one-third area lying in the state of Delhi (India). OBS has widest flood plains along the Delhi stretch of river Yamuna and is important in conserving the ecological wealth of floodplains of the river. Rapid urbanization and industrialization and discharge of untreated wastewater into the river have resulted in deteriorated water quality. The present study focused on assessment of water quality, aquatic flora and avifaunal diversity in the OBS. Water quality was analyzed following methods of APHA. For vegetation analysis, sub-merged and free-floating plants were scooped up from five randomly selected sites. Total bird counts were conducted for water birds and species richness, evenness and Shannon-Weaver species diversity indices were calculated. Results indicate that the organic load is very high in the wetland as evident from low levels of dissolved oxygen (2.26 ± 1.62 mg/l) and high Biological and Chemical Oxygen Demands (15.20 ± 3.75 mg/l, 44.60 ± 12.07 mg/l). Nine species of free-floating and submerged plants were recorded; Hydrilla verticillata, Vallisneria spiralis, Azolla pinnata and Ceratophyllum demersum dominated both deep and shallow water areas. 52 species of waterbirds including four near-threatened species viz., Anhinga melanogaster, Mycteria leucocephala, Threskiornis melanocephalus and Aythya nyroca were recorded. OBS provides opportunities for conservation in a metropolitan area, thus, appropriate measures should be taken to maintain its ecological integrity.

APA, Harvard, Vancouver, ISO, and other styles

36

Sow, Mounirou, Amir Sido, Mark Laing, and Marie-Noelle Ndjiondjop. "Agro-morphological variability of rice species collected from Niger." Plant Genetic Resources 12, no. 1 (July 18, 2013): 22–34. http://dx.doi.org/10.1017/s1479262113000221.

Full text

Abstract:

Niger harbours a wealth of diversity of Africa's rice (Oryza glaberrima) and its related wild species. We therefore engaged in a collecting mission of rice species across growing regions and agrosystems in Niger. A total of 270 rice accessions were assembled, including 177 Asian rice (O. sativa) cultivars, 67 African rice landraces (O.glaberrima), 25 O. barthii and one O.longistaminata. We found most accessions (80.7%) along the Niger River and its tributary the Dallol Maouri. Many of the accessions, except those belonging to the wild O. barthii initially found around the Lake Chad region, were also collected along the Niger River. Drought, insects, birds, rice yellow mottle virus and bacterial blight were noted as major constraints on rice production. Accession naming by farmers was consistent within regions but seldom across regions. Based on the recorded agro-morphological traits, the germplasm was classified into three clusters: (1) O. longistaminata with floating African landraces and late-maturing floating Asian rice; (2) lowland O.barthii and African landraces; (3) a mixture of irrigated Asian rice with lowland accessions of both cultivated species. The phenotypic variability of the germplasm collection, as measured by the Shannon–Weaver diversity index, was relatively high (H′ = 0.69), with accessions in the irrigated agrosystem being less diverse than those in the traditional agrosystems. There was no significant difference in the magnitude of diversity between the main eco-geographical zones and between the clusters. However, some traits contributing the most to this diversity were different. This study suggested a substantial germplasm exchange between regions in Niger.

APA, Harvard, Vancouver, ISO, and other styles

37

Kale, Manoj Ashokrao, Nandkishor Dudhe, Raju Kasambe, and Prosun Bhattacharya. "Crop Depredation by Birds in Deccan Plateau, India." International Journal of Biodiversity 2014 (September 3, 2014): 1–8. http://dx.doi.org/10.1155/2014/947683.

Full text

Abstract:

Extent of crop depredation in agricultural fields of groundnut, pearl millet, peas, sorghum and sunflower was assessed in Pune, Akola and Amravati, the three productive districts of Maharashtra, India. The study included interviews with the farmers, identification of the bird species responsible for the crop depredation and actual field assessment of damage. The problem of crop depredation is severe for the crops mostly during harvesting season. Most farmers were not satisfied with the conventional bird repelling techniques. A maximum depredation was observed by Sorghum crops by house sparrows Passer domesticus, baya weavers Ploceus philippinus, and rose-ringed parakeets Psittacula krameri, accounting to 52% of the total damage. Blue rock pigeons Columba livia damaged 42% of the peas crop (chick peas and pigeon peas), while house sparrows and baya weaver damaged the groundnut crop by 26% in the sampling plots. House sparrow Passer domesticus and baya weaver Ploceus philippinus damaged the groundnut crop in the sampling plots just after the sowing period. The sustainable solution for reducing crop depredation is a need for the farmers and also such techniques will help avoid direct or indirect effects of use of lethal bird control techniques on bird species.

APA, Harvard, Vancouver, ISO, and other styles

38

Dowsett-Lemaire, F., and R. J. Dowsett. "Birds of the Lobéké Faunal Reserve, Cameroon, and its regional importance for conservation." Bird Conservation International 10, no. 1 (March 2000): 67–87. http://dx.doi.org/10.1017/s095927090000006x.

Full text

Abstract:

The Faunal Reserve of the Lobéké area of south-eastern Cameroon is an important area for forest conservation. One day, it is hoped, it will be part of an international unit, in association with two protected areas in neighbouring countries (Dzanga-Ndoki National Park, Central African Republic and Nouabalé-Ndoki National Park, Congo). With a view to assessing the status of its avifauna in particular, 24 days were spent in three short surveys from 1997 to 1999. The main forest type is semi-evergreen, with an open canopy; the only natural savannas are small saline swamps. The total of 305 species of bird recorded includes a forest nightjar not yet identified (but more likely to be the rare Itombwe Nightjar Caprimulgus prigoginei than a new species) and the Dja River Warbler Bradypterus grandis. The latter is a species confined to Rhynchospora swamps and had not been re-located in Cameroon since it was first collected in 1914 west of the Dja river; the extent of suitable habitat in Lobéké makes this site the most important to date for its conservation. Other rare or little-known forest species recorded include Olive Ibis Bostrychia olivacea, Sandy Scops Owl Otus icterorhynchus, Zenker's Honeyguide Meligomon zenkeri, Tessmann's Flycatcher Muscicapa tessmanni and Yellow-capped Weaver Ploceus dorsomaculatus. Barred Owlet Glaucidium capense is locally common in open-canopy forest: this population was only recently discovered in central Africa and its taxonomic relationships have yet to be determined. We include a brief comparison with the avifauna of adjacent Dzangha-Ndoki National Park and Nouabalé-Ndoki National Park. A feature of the Lobéké avifauna is the presence of a few species normally associated with forest at higher altitudes (such as White-headed Wood Hoopoe Phoeniculus bollei, Uganda Woodland Warbler Phylloscopus budongoensis, Black-throated Apalis Apalis jacksoni), and perhaps absent from lower-lying Nouabalé-Ndoki.

APA, Harvard, Vancouver, ISO, and other styles

39

Maurice, Melle Ekane. "Weaver-Birds’ crop-Raiding Behavior in Buea municipality, Southwest Region, Cameroon." Global Scientific Research in Environmental Science 1, no. 1 (2020). http://dx.doi.org/10.53902/gsres.2020.01.000501.

Full text

Abstract:

The entire surface of the earth is visited by the birds in view of their aerial flights and variable habitats in search of suitable breeding and feeding grounds. Flight, intelligence, adaptability and sight are some of the attributes that add to the diversity in the life of birds, consequently there is complexity in their overall behavioral pattern. The key objective of this study was to assess the weaver-bird crop-raiding activity in Buea municipality on different environmental parameters. The study was undertaken for three months, six days in a week, from 7:00am to 6:00pm. Scan observations were made on birds’ activity on a five-minute interval period across the entire study area. Simultaneously, data was collected on the environmental conditions. The study recorded a significant association between weaver-bird activity on crop-land, X2 = 11.653 df=14, P < 0.005 and X2 = 3.441 df=4, P<0.05 respectively. There was weaver-bird activity frequency of 51.63%, 45.35%, and 3.02% for Ploceus luteolus, Ploceus cuculatus, and Ploceus melanocephalus respectively. Moreover, a week association between bird activity and weather, X2 = 3.125 df=3, P<0.05 was recorded. The sunny and cloudy weather conditions recorded 53.26%, and 42.09% respectively, while the windy and rainy weather conditions were significantly low (3.26%). An association was recored between atmospheric conditions and weaver-birds’ activity on crops, X2 = 23.249 df=21, P<0.05. In addition, the most destroyed farms were Elaeis guineensis (32.33%), Saccharum officinarum (19.77%), Zea mays (17.44%), and Mangifera indica (15.58%) respectively, and the scale of destruction was very prominent on the foliage used by the birds for nest-building. Maize crops and oil-palms were among the crop species most subjected to destruction by birds. These crops were observed with poor foliage formation and fruits, consequently they withered, and since the local farming population in this municipality predominantly cultivates these crops most, a heavy toll is often taken on the annual farmers’ income.

APA, Harvard, Vancouver, ISO, and other styles

40

"ON THE GENERIC CLASSIFICATION OF THE WEAVER-BIRDS OF EASTERN AFRICA." Ibis 91, no. 1 (April 3, 2008): 145. http://dx.doi.org/10.1111/j.1474-919x.1949.tb02248.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Lado, Thomas Francis, David Gwolo Phanuel Mogga, and Richard Angelo Lado Benjamin. "Patterns of Species Richness and Abundance in Badingilo National Park in South Sudan." Journal of Zoological Research 1, no. 1 (October 31, 2019). http://dx.doi.org/10.30564/jzr.v1i1.1284.

Full text

Abstract:

The study was carried out to determine patterns of birds’ species richness, alpha and beta diversities; and abundance in Badingilo national park using a 10 m fixed-radius point count method. A total of 2670 individuals were recorded from 182 points in the park. The highest expected number of species (Jack1 estimator) was observed in the Riverine habitat and least was in the Agriculture and Human settlement habitat type. The total number of species observed in the park was 63; however Jack1 estimator indicated that there were 68 species in the park. The majority of the birds observed during the study were resident species, few migratory and Palaearctic bird species. Few birds observed in the park were abundant. The most abundant species was the village weaver (381 individuals), and the rarest species were black-bellied bustard, barn owl, black scimitar bill and tree pipit (one individual each).

APA, Harvard, Vancouver, ISO, and other styles

42

Mironov, Sergey, Ivan Literák, Miroslav Čapek, and Petr Koubek. "New species of the feather mite subfamily Pterodectinae (Astigmata, Proctophyllodidae) from passerines in Senegal." Acta Parasitologica 55, no. 4 (January 1, 2010). http://dx.doi.org/10.2478/s11686-010-0051-1.

Full text

Abstract:

AbstractFour new species of the feather mite subfamily Pterodectinae (Proctophyllodidae) are described from passerine birds examined in Senegal: Dolichodectes gymnoris sp. nov. from the Russet-browed Bush-sparrow Gymnoris dentata (Sundevall, 1850) (Passeridae), Montesauria plocei sp. nov. from the Village Weaver Ploceus cucullatus (Muller, 1776) (Ploceidae), M. zosteropis sp. nov. from the African Yellow White-eye Zosterops senegalensis Bonaparte, 1850 (Zosteropidae), and Proterothrix terpsiphone sp. nov. from the African Paradise-flycatcher Terpsiphone viridis (Muller, 1776) (Monarchidae). Brief notes on systematics and host associations of the pterodectine genera Dolichodectes Park et Atyeo, 1971, Montesauria Oudemans, 1905, and Proterothrix Gaud, 1968 are also given.

APA, Harvard, Vancouver, ISO, and other styles

43

Nachuha, Sarah, and Fortunate Twagiramaria. "A Survey of Avian Fauna in Kabale Municipality, South Western Uganda." Advances in Research, December 7, 2020, 1–8. http://dx.doi.org/10.9734/air/2020/v21i1130264.

Full text

Abstract:

Collection of data on avifaunal diversity is a crucial component for monitoring the effects of habitat changes on biodiversity. A rapid cross sectional survey to document common bird species present in Kabale municipality was conducted over a period of 3 months. Birds were categorized into families and the Shannon–Weaver (H') diversity index and the abundance of all the species was calculated. A total of 1770 bird individuals consisting of 67 species, 34 families were recorded, with an overall species diversity of 3.41. The Grey Crowned Crane (Balearica regulorum) an endangered species and the Woolly–necked Stork (Ciconia episcopus) a vulnerable species were among the species recorded. The relatively high diversity is probably attributed to the presence of trees on farmland areas within the municipality. This combination seems to provide various food sources or nesting and perching grounds for the birds. Information generated by this study will serve as a benchmark for monitoring of changes in species diversity and composition over time. In addition, the list of birds will be useful to residents of the area and the many ecotourists who visit Kabale town.

APA, Harvard, Vancouver, ISO, and other styles

44

Oschadleus, H. Dieter. "Weavers as prey of Barn Owls." Biodiversity Observations 9 (January 30, 2018). http://dx.doi.org/10.15641/bo.v9i0.509.

Full text

Abstract:

Barn Owls Tyto alba are widespread globally, and feed largely on rodents, but also birds. In Africa, weavers are an important component of avian prey. 44 studies were found that list weavers as prey of Barn Owls, with 11 species of Ploceidae weavers identified to species level, although there are likely many other weaver species that have been taken but not yet identified. Hunting strategies of the Barn Owl are taking weavers at their nests at night (four records), or taking roosting weavers from reedbeds. Barn Owls have been recorded at Red-billed Quelea Quelea quelea colonies, where they presumably pick up recently fledged juveniles.

APA, Harvard, Vancouver, ISO, and other styles

45

Victor, Reginald, and Kinnari Bhatt. "Observations on the unusual agonistic behaviour of two sympatric species of birds Rüppell’s weaver and Abyssinian white-eye in southern Oman." International Journal of Environmental Studies, August 27, 2021, 1–5. http://dx.doi.org/10.1080/00207233.2021.1971869.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Symes, Craig T. "Notes on the flowering and pollination of the endemic grassland Aloe reitzii var. reitzii (Asphodelaceae)." Bothalia 47, no. 2 (August 31, 2017). http://dx.doi.org/10.4102/abc.v47i1.2215.

Full text

Abstract:

Background: Aloe reitzii var. reitzii is a succulent with a restricted distribution in the montane grassland of eastern South Africa. It is a summer (late January–March) flowering succulent that grows on rocky outcrops at 1000 m–1600 m, and the conspicuous inflorescences suggest a pollination system focused towards birds.Objectives: To understand more about the pollination biology of A. reitzii var. reitzii.Methods: Nectar standing crop (flower volume and concentration) and the proportion of plants flowering were recorded. Camera traps and observations were used to record visitors to A. reitzii var. reitzii inflorescences.Results: Nectar volume was 36 μL ± 27 μL per flower (range 6 μL–93 μL; n = 27) and concentration was 16.5% ± 1.7% (range 13.5% – 19.5%). Camera trap observations, where 18.9% of all plants were observed flowering, recorded the three bird species Cape Weaver, Ploceus capensis, Malachite Sunbird, Nectarinia famosa and Greater Double-collared Sunbird, Cinnyris afer (60.4%, 27.1% and 12.5% of plant visits, respectively) visiting inflorescences.Conclusion: Because birds are important pollinators for many Aloe species, it is assumed that the bird species detected visiting A. reitzii var. reitzii are similarly important pollinators. At least 10 invertebrate species and sengi (Elephantulus sp.) were also recorded as visitors to flowers, but they may be less important pollinators than specialist and generalist avian nectarivores. This study provides further insight into the pollination biology of a diverse, and ecologically important, succulent genus in Africa.

APA, Harvard, Vancouver, ISO, and other styles

47

Garcia-Longoria, Luz, Jaime Muriel, Sergio Magallanes, Zaira Hellen Villa-Galarce, Leonila Ricopa, Wilson Giancarlo Inga-Díaz, Esteban Fong, et al. "Diversity and host assemblage of avian haemosporidians in different terrestrial ecoregions of Peru." Current Zoology, April 1, 2021. http://dx.doi.org/10.1093/cz/zoab030.

Full text

Abstract:

Abstract Characterizing the diversity and structure of host–parasite communities is crucial to understanding their eco-evolutionary dynamics. Malaria and related haemosporidian parasites are responsible for fitness loss and mortality in bird species worldwide. However, despite exhibiting the greatest ornithological biodiversity, avian haemosporidians from Neotropical regions are quite unexplored. Here, we analyze the genetic diversity of bird haemosporidian parasites (Plasmodium and Haemoproteus) in 1,336 individuals belonging to 206 bird species to explore for differences in diversity of parasite lineages and bird species across 5 well-differentiated Peruvian ecoregions. We detected 70 different haemosporidian lineages infecting 74 bird species. We showed that 25 out of the 70 haplotypes had not been previously recorded. Moreover, we also identified 81 new host–parasite interactions representing new host records for these haemosporidian parasites. Our outcomes revealed that the effective diversity (as well as the richness, abundance, and Shannon–Weaver index) for both birds and parasite lineages was higher in Amazon basin ecoregions. Furthermore, we also showed that ecoregions with greater diversity of bird species also had high parasite richness, hence suggesting that host community is crucial in explaining parasite richness. Generalist parasites were found in ecoregions with lower bird diversity, implying that the abundance and richness of hosts may shape the exploitation strategy followed by haemosporidian parasites. These outcomes reveal that Neotropical region is a major reservoir of unidentified haemosporidian lineages. Further studies analyzing host distribution and specificity of these parasites in the tropics will provide important knowledge about phylogenetic relationships, phylogeography, and patterns of evolution and distribution of haemosporidian parasites.

APA, Harvard, Vancouver, ISO, and other styles

48

Kopij, G. "The birds of Sehlabathebe National Park, Lesotho." Koedoe 45, no. 1 (December 14, 2002). http://dx.doi.org/10.4102/koedoe.v45i1.15.

Full text

Abstract:

A total of 117 bird species has been recorded in Sehlabathebe National Park, south-east Lesotho, consisting of 29 vagrants, 18 visitors and 70 breeding and probable breeding residents. For each species status was determined and abundance roughly estimated. Quantitative studies on breeding bird communities were carried out by means of the line transect method on four transects with the total length ca 30 km in the park and on two transects with the total length of ca 20 km outside the park. In the park, dominant species were represented by the Stonechat Saxicola torquata, Ayres’ Cisticola Cisticola ayresii, Yellow-rumped Widow Euplectes capensis and Wailing Cisticola Cisticola lais. Outside the park dominants were represented by Cape Weaver Ploceus capensis, Cape Sparrow Passer melanurus, Cape Canary Serinus canicollis, Common Quail Coturnix coturnix, Stonechat, Cape Bunting Emberiza capensis and Drakensberg Siskin Pseudochloroptila symonsi. Characteristic, high-altitude species in the park included Drakensberg Siskin, Mountain Pipit Anthus hoeschi, Orange-breasted Rockjumper Chaetops auriantius, Banded Martin Riparia cincta and Sentinel Rock Thrush Monticola explorator. Species such as the Laughing Dove Streptopelia senegalensis, Sicklewinged Chat Cercomela sinuata, Mountain Chat Oenanthe monticola, Thick-billed Lark Galerida magnirostris, Red-winged Starling Onychognathus morio, Alpine Swift Apus melba Cape Sparrow, Grey-headed Sparrow Passer diffusus, Red Bishop Euplectes orix and Golden Bishop Euplectes afer were absent or occurred in very low densities in the park, although they are widespread and common in the Maluti/Drakensberg grasslands (including areas neighbouring to the park). The lack of trees and shrubs for nesting, the lack of cultivated fields as feeding places and competition with related species both for food and nesting sites, may partly play a role in this regard.

APA, Harvard, Vancouver, ISO, and other styles

Journal articles on the topic 'Weaver-birds'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles