Relevant bibliographies by topics / Nectarivores birds

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters

Academic literature on the topic 'Nectarivores birds'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Nectarivores birds"

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MELO, C. "Diurnal bird visiting of Caryocar brasiliense Camb. in Central Brazil." Revista Brasileira de Biologia 61, no. 2 (2001): 311–16. http://dx.doi.org/10.1590/s0034-71082001000200014.

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Nectar of nocturnal flowers may be used by diurnal species that occasionally accomplish secondary pollination. Thirteen bird species visited Caryocar brasiliense flowers in central Brazil. There is a temporal separation between nectarivores and non-nectarivores species. Nectarivores birds visited flowers late in the morning, while other species appear earlier. C. brasiliense nectar may be an alternative resource to birds visitors during the dry season.
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Tsahar, Ella, Zeev Arad, Ido Izhaki, and Carlos Martínez del Rio. "Do Nectar- and Fruit-Eating Birds Have Lower Nitrogen Requirements Than Omnivores? an Allometric Test." Auk 123, no. 4 (2006): 1004–12. http://dx.doi.org/10.1093/auk/123.4.1004.

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Abstract We used an allometric approach to compare the minimum nitrogen requirements (MNR) and the total endogenous nitrogen loss (TENL) of nectar- and fruit-eating birds with those of omnivorous birds. These two parameters were 4× higher in omnivores than in nectarivores and frugivores. In nectarivorous-frugivorous birds, MNR was 152.8 mg N kg−0.76 day−1; in omnivorous birds, it was 575.4 mg N kg−0.76 day−1. Similarly, TENL was 54.1 mg N kg−0.69 day−1 in nectarivores-frugivores, and 215.3 mg N kg−0.69 day−1 in omnivores. The residuals of the allometric relationships between TENL and MNR and b
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Diller, Carolina, Miguel Castañeda-Zárate, and Steven D. Johnson. "Generalist birds outperform specialist sunbirds as pollinators of an African Aloe." Biology Letters 15, no. 7 (2019): 20190349. http://dx.doi.org/10.1098/rsbl.2019.0349.

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Bird pollination systems are dominated by specialist nectarivores, such as hummingbirds in the Americas and sunbirds in Africa. Opportunistic (generalist) avian nectarivores such as orioles, weavers and bulbuls have also been implicated as plant pollinators, but their effectiveness as agents of pollen transfer is poorly known. Here, we compare the single-visit effectiveness of specialist and opportunistic avian nectarivores as pollinators of Aloe ferox, a plant that relies almost exclusively on birds for seed production. We found that the number of pollen grains on stigmas of flowers receiving
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Tchoumbou, Mélanie A., Elikwo F. N. Malange, Claire T. Tiku, et al. "Response of Understory Bird Feeding Groups to Deforestation Gradient in a Tropical Rainforest of Cameroon." Tropical Conservation Science 13 (January 2020): 194008292090697. http://dx.doi.org/10.1177/1940082920906970.

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Birds are crucial in maintaining the balance of many ecosystems and provide various ecological services. Understanding their sensitivity to human disturbances should be prioritized in understudy areas for effective conservation practices. Using mist nets, this study characterized mostly understory bird communities (insectivorous, frugivorous, granivorous, and nectarivorous birds) in three habitat types (pristine forest, selectively logged forest, and young oil palm plantation) in the Talangaye rainforest, Southwest Cameroon. A total of 845 birds belonging to 27 families and 85 species were rec
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Barrantes, Gilbert, and Luis Sandoval. "Effect of El Niño and La Niña on abundance of frugivorous and nectarivorous terrestrial birds in three tropical forests." Revista de Biología Tropical 67, no. 2SUPL (2019): S282—S297. http://dx.doi.org/10.15517/rbt.v67i2supl.37252.

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El Niño and La Niña climatic oscillations have dramatic effects on population dynamics and community structure of different animals. For marine birds, El Niño phenomenon drastically increases their mortality and reduces their reproductive success. In terrestrial ecosystems, the lack of long-term longitudinal data limits our understanding of the impact of El Niño and La Niña on bird populations and communities. We analyzed changes in abundance of frugivorous (large, medium, and small) and nectarivorous birds on three tropical forest types (lowland, premontane and montane) during El Niño, La Niñ
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Richardson, KC, and RD Wooller. "The Structures of the Gastrointestinal Tracts of Honeyeaters and Other Small Birds in Relation to Their Diets." Australian Journal of Zoology 34, no. 2 (1986): 119. http://dx.doi.org/10.1071/zo9860119.

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Honeyeaters, with a diet of nectar and small, soft-bodied insects, had smaller, less muscular gizzards and shorter intestines than insect-eating birds of comparable body size from the same area of Western Australia. Stomach width was correlated with body weight in insectivores but not in the more nectarivorous honeyeaters. Intestine length increased with increase in body weight in both insectivores and nectarivores.
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Malizia, Lucio R. "Seasonal Fluctuations of Birds, Fruits, and Flowers in a Subtropical Forest of Argentina." Condor 103, no. 1 (2001): 45–61. http://dx.doi.org/10.1093/condor/103.1.45.

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AbstractI quantified monthly variation in species composition and captures of birds in a premontane forest of northwestern Argentina. Seasonal patterns of frugivore-insectivores and nectarivores were compared with fruit and flower abundances, respectively. The composition of the entire bird community fluctuated seasonally; frugivore-insectivores showed a peak in captures during the wet season, insectivores peaked at the end of the dry season, and nectarivores peaked during the dry season. At a local scale (∼50 ha), captures of frugivore-insectivores were not correlated with number of plant spe
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Woinarski, JCZ, and SC Tidemann. "The Bird Fauna of a Deciduous Woodland in the Wet-Dry Tropics of Northern Australia." Wildlife Research 18, no. 4 (1991): 479. http://dx.doi.org/10.1071/wr9910479.

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Censuses of birds were made monthly from October 1986 to October 1987 in a deciduous woodland in the Australian Northern Territory. Additional limited counts of granivorous birds were made in March and April 1988. The woodland was selected for the study because it contains a population of the endangered Gouldian finch (Erythrua gouldiae). The species composition of birds was temporally unstable; this was associated with the marked wet-dry seasonality. For some foraging groups (e.g. nectarivores, foliage-gleaners), diversity was correlated with resource availability. Although the species compos
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Burd, Martin, C. Tristan Stayton, Mani Shrestha, and Adrian G. Dyer. "Distinctive convergence in Australian floral colours seen through the eyes of Australian birds." Proceedings of the Royal Society B: Biological Sciences 281, no. 1781 (2014): 20132862. http://dx.doi.org/10.1098/rspb.2013.2862.

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We used a colour-space model of avian vision to assess whether a distinctive bird pollination syndrome exists for floral colour among Australian angiosperms. We also used a novel phylogenetically based method to assess whether such a syndrome represents a significant degree of convergent evolution. About half of the 80 species in our sample that attract nectarivorous birds had floral colours in a small, isolated region of colour space characterized by an emphasis on long-wavelength reflection. The distinctiveness of this ‘red arm’ region was much greater when colours were modelled for violet-s
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Johnson, Steven D., Ian Kiepiel, and Alastair W. Robertson. "Functional consequences of flower curvature, orientation and perch position for nectar feeding by sunbirds." Biological Journal of the Linnean Society 131, no. 4 (2020): 822–34. http://dx.doi.org/10.1093/biolinnean/blaa154.

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Abstract Mutualisms between nectarivorous birds and the plants they pollinate are functionally diverse. Nectarivorous birds which hover while feeding (the majority of hummingbirds) tend to have straight bills, while those that perch while feeding (some hummingbirds and almost all passerine nectarivores) tend to have decurved bills. Sunbirds typically use their curved bills to feed in an arc from a perching position and we thus predicted that they would prefer, and feed most efficiently on, flowers that are curved towards a perching position. To test this, we examined the responses of sunbirds
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Dissertations / Theses on the topic "Nectarivores birds"

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Kohler, Angela. "Food quality, fasting periods and temperature stress : effects of energy challenges on the feeding patterns of avian nectarivores." Thesis, University of Pretoria, 2009. http://hdl.handle.net/2263/28655.

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The small size of nectarivorous birds is associated with high mass-specific metabolic rates and energetic lifestyles. Their energy balance is likely to be strongly influenced by environmental factors. Firstly, nectar varies in sugar concentration between different food plants and birds must adjust their consumption to maintain a constant energy intake. Secondly, unfavourable weather conditions, such as storms and heavy rains, may prevent birds from feeding, and they must increase their energy intake to compensate for the loss in foraging time. Low ambient temperature, as a third energetic chal
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Silva, Bruna Gonçalves da. "Comunidades de aves frugívoras e nectarívoras e disponibilidade de recursos em dois estádios sucessionais de regeneração de Mata Atlântica." Universidade Federal de São Carlos, 2012. https://repositorio.ufscar.br/handle/ufscar/1521.

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Made available in DSpace on 2016-06-02T19:26:21Z (GMT). No. of bitstreams: 1 SILVA_Bruna_2012.pdf: 2724610 bytes, checksum: fe28e8afc06ce2b8c55372a0dbc428ee (MD5) Previous issue date: 2012-04-13<br>The availability of food resources in different degrees of regeneration of a forest may contribute to possible variations in species abundance and composition of bird communities. The main objective of this study is to investigate the relationship between the structure of frugivores and nectarivores bird communities and the availability of food resources - flowers and fruit - in two successional s
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Connolly, Alexandra. "Crypsis in non-flying mammal pollinated Proteaceae: novel adaptations and evidence of nectarivorous bird avoidance." Master's thesis, Faculty of Science, 2019. http://hdl.handle.net/11427/31394.

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A defining feature of the non-flying mammal pollinated (NMP) syndrome is inflorescence crypsis whereby flowers are close to the ground and somewhat hidden within the canopy. A number of species in the Cape Proteaceae are NMP, two of which were chosen as focal species for this study: Protea amplexicaulis and Protea humiflora. This study investigated the two previously suggested hypotheses for crypsis: hidden flowers are more difficult for nectarivorous birds to access, or hidden flowers provide greater cover for small mammal pollinators from aerial predators. Using remote triggered cameras, P.
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Symes, Graig Thomas. "Avian nectarivory and pollination in Aloe marlothii Berger : interactions between bird communities and a winter-flowering succulent." Pretoria : [s.n.], 2008. http://upetd.up.ac.za/thesis/available/etd-11182008-090901.

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Daniels, Craig Lee. "The feeding ecology of nectarivorous birds in the Natal Drakensberg." Thesis, 1987. http://hdl.handle.net/10413/9300.

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Brown, Mark. "Nectar preferences of specialist and occasional avian nectarivores, and their role in the evolution of floral traits." Thesis, 2009. http://hdl.handle.net/10413/10779.

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Our understanding of bird pollination systems has changed dramatically in the last few years. A long-standing paradigm was that hummingbirds and passerine birds select for different nectar properties in flowers (phylogenetic hypothesis). However, specialist passerines, such as sunbirds, have similar nectar preferences to hummingbirds and nectar in plants pollinated by these two bird groups is strongly convergent. Thus, as an alternative to the existing paradigm, it has been argued that the most useful distinction that can be drawn is that between specialist and generalist avian nectarivo
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Symes, Craig Thomas. "Avian nectarivory and pollination in Aloe marlothii Berger : interactions between bird communities and a winter-flowering succulent." Thesis, 2008. http://hdl.handle.net/2263/29541.

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Aloe marlothii is a winter-flowering succulent that is widespread in the savanna biome of northern and north-eastern South Africa. Plants grow up to 8 m in height and are commonly found on rocky north-facing slopes. Nectar production occurs through a 24 h period with flowers producing copious amounts (c. 250 µl) of dilute nectar (c. 12%). This abundant nectar supply, that is available for a 5-10 week period during June-August, is utilised by numerous opportunistic avian nectarivores. At a study site in Suikerbosrand Nature Reserve, 60 km south-east of Johannesburg, at least 59% (38 species) of
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Book chapters on the topic "Nectarivores birds"

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"A case study: interactions among nectarivores." In The Ecology of Bird Communities. Cambridge University Press, 1989. http://dx.doi.org/10.1017/cbo9780511608568.004.

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Journal articles
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