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Journal articles on the topic 'Northern shoveler'

Author: Grafiati

Published: 25 October 2023

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1

Wells-Berlin, Alicia M., Harold H. Prince, and Todd W. Arnold. "Incubation Length of Dabbling Ducks." Condor 107, no. 4 (2005): 926–29. http://dx.doi.org/10.1093/condor/107.4.926.

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AbstractWe collected unincubated eggs from wild Mallard (Anas platyrhynchos), Gadwall (A. strepera), Blue-winged Teal (A. discors), and Northern Shoveler (A. clypeata) nests and artificially incubated them at 37.5°C. Average incubation lengths of Mallard, Gadwall, and Northern Shoveler eggs did not differ from their wild-nesting counterparts, but artificially incubated Blue-winged Teal eggs required an additional 1.7 days to hatch, suggesting that wild-nesting teal incubated more effectively. A small sample of Mallard, Gadwall, and Northern Shoveler eggs artificially incubated at 38.3°C hatche

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2

Titman, Rodger, Elise Titman, and Shawn Craik. "Timing of pair formation and male acquisition of alternate plumage by three wintering dabbling ducks." Canadian Field-Naturalist 135, no. 1 (2021): 39–46. http://dx.doi.org/10.22621/cfn.v135i1.2547.

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Pair formation in ducks is thought to be influenced by the acquisition of breeding plumage, the occurrence of courtship display, or both. We examined the frequency of pair formation in Mallard (Anas platyrhynchos), Green-winged Teal (Anas crecca carolinensis), and Northern Shoveler (Spatula clypeata) in the central valley of California in relation to the frequencies of male attainment of breeding plumage and courtship display. Predictions related to two hypotheses are: (1) the timing of pair formation is directly related to the attainment of breeding (definitive alternate) plumage by males, an

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3

Slimane, Ayeb, Elafri Ali, and Salah Telailia. "Northern Shoveler Spatula clypeata: a possible first breeding record for Algeria." Biodiversity Observations 13 (February 24, 2023): 142–45. http://dx.doi.org/10.15641/bo.1210.

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Breeding events of a waterbird species outside of their normal breeding grounds could be important to address how population changes on wintering areas are impacted by changes elsewhere in the birds’ annual cycle. In this note we confirm the first breeding record of Northern Shoveler Spatula clypeata in Algeria. The breeding site was a saline lake, Sebkhet El-mahmel, located 180 km from the Mediterranean Sea and subject to a semi-arid climate. The area was visited on 16 June 2019 and the species was confirmed as a pair of Northern Shoveler accompanied by eight juveniles. The Northern Shoveler

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4

DuBowy, Paul J. "Feeding ecology and behavior of postbreeding male Blue-winged Teal and Northern Shovelers." Canadian Journal of Zoology 63, no. 6 (1985): 1292–97. http://dx.doi.org/10.1139/z85-194.

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This study examined foraging strategies in male Northern Shovelers (Anas clypeata) and Blue-winged Teal (Anas discors). Differences in time–activity budgets and esophageal contents between the two species indicated major differences in the degree of foraging specialization. Preflightless male Northern Shovelers spent 84.2% of time foraging, with dabbling in the water column as the principal foraging mode (83.4%), while postflightless male shovelers spent 81.6% of time foraging (78.7% dabbling). Preflightless male Blue-winged Teal spent 68.6% of time foraging, with dabbling in mud (32.5%) and p

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5

Krapu, Gary L., Ronald E. Reynolds, Glen A. Sargeant, and Randy W. Renner. "Patterns of Variation in Clutch Sizes in a Guild of Temperate-Nesting Dabbling Ducks." Auk 121, no. 3 (2004): 695–706. http://dx.doi.org/10.1093/auk/121.3.695.

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Abstract We investigated patterns and causes of variation in clutch sizes in a guild of five species of temperate-nesting dabbling ducks (Mallard [Anas platyrhynchos], Northern Pintail [“pintail,” A. acuta], Gadwall [A. strepera], Blue-winged Teal [“teal,” A. discors], and Northern Shoveler [“shoveler,” A. clypeata]) during 1993-1995 in the Prairie Pothole Region of midcontinental North America. Clutch sizes (mean ± SE) were largest for teal (10.80 ± 0.03), followed in descending order by those of shoveler (10.31 ± 0.05), Gadwall (9.92 ± 0.04), Mallard (8.91 ± 0.04), and pintail (7.66 ± 0.06).

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Krapu, Gary L. "Temporal Flexibility of Reproduction in Temperate-Breeding Dabbling Ducks." Auk 117, no. 3 (2000): 640–50. http://dx.doi.org/10.1093/auk/117.3.640.

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AbstractI compared nesting intervals during three consecutive years in five species of temperate-nesting dabbling ducks (Mallard [Anas platyrhynchos], Northern Pintail [Anas acuta], Northern Shoveler [Anas clypeata], Blue-winged Teal [Anas discors], Gadwall [Anas strepera]) and assessed whether differences existed in timing of refractoriness. Most nesting by females of all five species ended by the summer solstice. Nesting ended earliest for Northern Shovelers and Northern Pintails and latest for Gadwalls. Some Mallards, Blue-winged Teal, and Gadwalls continued to nest into mid- and late summe

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7

El Rahman, Mokhless Ahmed Mohamed Abd, Ahmed Hamed Khalifa, and Ahmed Shabaan Badri Ashour. "Carcass Characteristics, Physicochemical Properties and Nutritional Composition of Meat from two Wild Birds: Northern Pintail (Anas acuta) and Northern Shoveler (Spatula clypeata)." International Journal of Current Microbiology and Applied Sciences 11, no. 8 (2022): 130–46. http://dx.doi.org/10.20546/ijcmas.2022.1108.013.

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The objective of this study was to evaluate the characteristics of the carcass, physicochemical properties as well as nutritional composition in breast and leg meat (with skin) of two different genotypes of wild birds namely: pintail (Anas acuta) and shoveler (Spatula clypeata) with regard to sex effect. The study involved forty-eight birds, 24 pintail and 24 shovelers (1:1 sex ratio) harvested during the hunting season (in September and November 2020) in lake Nasser from the Gerf-Hussein region, south Aswan Government. After the slaughter and dissection. PH, WHC and color coordinates of the b

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8

Loos, Elizabeth R., and Frank C. Rohwer. "Laying-Stage Nest Attendance and Onset of Incubation in Prairie Nesting Ducks." Auk 121, no. 2 (2004): 587–99. http://dx.doi.org/10.1093/auk/121.2.587.

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Abstract We used microprocessor data loggers to document patterns of nest attendance during the laying stage and to quantify temperatures of dummy eggs during laying for Mallard (Anas platyrhynchos), Blue-winged Teal (A. discors), Northern Shoveler (A. clypeata), Northern Pintail (A. acuta), Gadwall (A. strepera), Green-winged Teal (A. crecca), American Wigeon (A. americana), and Lesser Scaup (Aythya affinis) nesting in southern Manitoba in 1994 and in northeastern North Dakota in 1995–1997 and 2000–2002. Females of all species increased the time they spent on the nest as laying progressed, bu

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9

MATUBARA, Takeshi. "Esophageal and Gizzard Contents of Northern Shoveler(Anas clypeata) in Lake Teganuma." Japanese Journal of Limnology (Rikusuigaku Zasshi) 53, no. 4 (1992): 373–77. http://dx.doi.org/10.3739/rikusui.53.373.

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10

Heitmeyer, Mickey E. "Influences of age, body condition, and structural size on mate selection by dabbling ducks." Canadian Journal of Zoology 73, no. 12 (1995): 2251–58. http://dx.doi.org/10.1139/z95-267.

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Both members of pairs of mallards (Anas platyrhynchos), northern pintails (Anas acuta), northern shovelers (Anas clypeata), and American wigeon (Anas americana) were collected early in the pairing periods in fall and during spring migration (several months after most birds were paired) to provide insights into whether (i) assortative mating occurs; (ii) body condition changes synchronously among pair members; and (iii) characteristics of selected individuals ultimately confer advantages in survival and recruitment. Both members in 19 of 21 mallard, 16 of 16 pintail, 14 of 14 shoveler, and 14 o

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11

RAZA, Ghulam Ali. "FOOD CONTENTS ANALYSIS OF WATERFOWL PASSING THROUGH INDUS THE RIVER AT TAUNSA, SOUTH PUNJAB, PAKISTAN." Agrobiological Records 12 (June 2023): 9–21. http://dx.doi.org/10.47278/journal.abr/2023.010.

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A study was carried out to assess the food composition of migratory waterfowl in Bet Makwal Kalan, near the Head Taunsa Barrage, along the River Indus passage. Migratory water birds are thought to be important components in dispersal of total living entity especially seeds due to their proclivity for extensive relocations. They might be found in large numbers in the muddy sections. Migratory water birds are important components of total plant dispersal due to their proclivity for making extensive migrations. A sum of 459 gizzard samples was collected, during their Fall migration, relating to 1

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12

Zarubin, Boris E., Vyacheslav V. Kolesnikov, Anna V. Kozlova, Maria S. Shevnina, and Alexander V. Economov. "Species structure of small game hunting in the Kirov region at the beginning of the XXI century." Agricultural Science Euro-North-East 22, no. 4 (2021): 597–607. http://dx.doi.org/10.30766/2072-9081.2021.22.4.597-607.

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An assessment of the species structure and size of small game prey for the spring and autumn-winter hunting seasons on the territory of the Kirov region was made, using a questionnaire survey based on the analysis of the prey of 3220 individuals. Small game includes such species (groups of species) as mallard, Northern shoveler, pintail, teal-whistle, teal cracker (Garganey), Eurasian wigeon, diving ducks, white-fronted goose, bean goose, wood grouse, black grouse, hazel grouse, woodcock, double snipe, snipe, corncrake, wood pigeon, turtle doves, white hare, European hare. The average index of

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13

Ryckman, Mason D., Kaylan Kemink, Christopher J. Felege, Brian Darby, Gregory S. Vandeberg, and Susan N. Ellis-Felege. "Behavioral responses of blue-winged teal and northern shoveler to unmanned aerial vehicle surveys." PLOS ONE 17, no. 1 (2022): e0262393. http://dx.doi.org/10.1371/journal.pone.0262393.

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Unmanned aerial vehicles (UAVs) have become a popular wildlife survey tool. Most research has focused on detecting wildlife using UAVs with less known about behavioral responses. We compared the behavioral responses of breeding blue-winged teal (Spatula discors) (n = 151) and northern shovelers (Spatula clypeata) (n = 46) on wetlands flown over with a rotary DJI Matrice 200 quadcopter and control wetlands without flights. Using a GoPro camera affixed to a spotting scope, we conducted focal individual surveys and recorded duck behaviors for 30 minutes before, during, and 30 minutes after UAV fl

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14

Lewis, Thomas E., and Pamela R. Garrettson. "Parasitism of a Blue-winged Teal Nest by a Northern Shoveler in South Dakota." Wilson Journal of Ornithology 122, no. 3 (2010): 612–14. http://dx.doi.org/10.1676/10-010.1.

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15

Grand, James Barry. "Nesting success of ducks on the central Yukon Flats, Alaska." Canadian Journal of Zoology 73, no. 2 (1995): 260–65. http://dx.doi.org/10.1139/z95-030.

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Nesting success was studied at Canvasback Lake and Mallard Lake on the Yukon Flats in interior Alaska in 1989–1991. Simple estimates of nesting success were computed using two techniques that assume a constant daily survival rate (DSR). Maximum-likelihood estimates of nesting success for all ducks, assuming constant DSR, ranged among years and sites from near zero to 12%. However, DSRs were not constant but increased with nest age and initiation date (R2 = 0.42, P = 0.0001). Nesting success was near zero for nests initiated 1–10 May and increased to 100% for nests initiated after 30 June. Ther

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16

Touarfia, Moundji, and Nadhra Boukrouma. "Breeding ecology of the northern shoveller (Spatula clypeata) in Tiffech Lake (Souk Ahras, Northeastern Algeria)." Acta Musei Silesiae, Scientiae Naturales 71, no. 2 (2022): 97–104. http://dx.doi.org/10.2478/cszma-2022-0005.

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Abstract The breeding behavior of Northern Shoveler (Spatula clypeata) was studied from January 2019 to March 2021 in Tiffech lake, an artificial wetland, in Souk Ahras Province, Northeastern Algeria. On this ecosystem, egg-laying occurred from earlier January to mid-March. In this study, there was a positive correlation between the egg-laying period and the number of active nests. The mean incubation period was 36.0 days. Clutches started later in the season and had a shorter incubation duration than early clutches. Hatching success amounted to 79.2% (n= 52 nests) and hatching success from eg

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17

Guillemain, Matthieu, Herve Fritz, Noël Guillon, and Noel Guillon. "Foraging Behavior and Habitat Choice of Wintering Northern Shoveler in a Major Wintering Quarter in France." Waterbirds: The International Journal of Waterbird Biology 23, no. 3 (2000): 353. http://dx.doi.org/10.2307/1522173.

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18

House, Deborah J. "Fall Waterfowl Use of Bridgeport Reservoir, Mono County, California." Western Birds 52, no. 4 (2021): 278–95. http://dx.doi.org/10.21199/wb52.4.1.

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Aerial surveys from 2003 to 2019 documented the abundance of waterfowl at Bridgeport Reservoir in Mono County, California, from September through mid-November. Waterfowl totals at Bridgeport Reservoir averaged 33,106 ± 4050 (standard error) in the fall. Annual peak counts averaged 10,474 ± 1349, ranging from a low of 2583 in 2014 to the highest single-day count of 23,150 in 2005. Bridgeport Reservoir is a man-made water body in the intermountain West that waterfowl use primarily a mid-migration stopover site, with peak numbers occurring in September. The dominant waterfowl species, the Norther

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19

Lamont, Myles M. "New avian breeding records for Kugluktuk, Nunavut." Canadian Field-Naturalist 132, no. 3 (2019): 254–60. http://dx.doi.org/10.22621/cfn.v132i3.1903.

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New breeding records for 10 species of tundra and boreal nesting birds were documented near the community of Kugluktuk (Nunavut, Canada) over the course of the 2015 and 2016 breeding seasons and incidentally in 2017 and 2018. These species include American Wigeon (Mareca americana), Mallard (Anas platyrhynchos), Northern Shoveler (Anas clypeata), Green-winged Teal (Anas carolinensis), Greater Scaup (Aythya marila), Say’s Phoebe (Sayornis saya), Canada Jay (Perisoreus canadensis), Greycheeked Thrush (Catharus minimus), Yellow-rumped Warbler (Setophaga coronata), and Dark-eyed Junco (Junco hyema

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20

Padilla-Aguilar, Patricia, Evangelina Romero-Callejas, David Osorio-Sarabia, et al. "Detection and Molecular Identification of Sarcocystis rileyi (Apicomplexa: Sarcocystidae) From a Northern Shoveler (Anas clypeata) in Mexico." Journal of Wildlife Diseases 52, no. 4 (2016): 931–35. http://dx.doi.org/10.7589/2016-01-004.

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21

St. James, Elizabeth A., Michael L. Schummer, Richard M. Kaminski, Edward J. Penny, and L. Wesley Burger. "Effect of Weekly Hunting Frequency on Rate of Ducks Harvested." Journal of Fish and Wildlife Management 6, no. 1 (2014): 247–54. http://dx.doi.org/10.3996/012014-jfwm-009.

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Abstract Waterfowl hunting is important culturally and economically in North America. Few studies have evaluated the relationship between weekly hunting frequency and rate of ducks harvested. We evaluated the effect of hunting 2 or 4 d/wk on rate of ducks harvested on three Mississippi Wildlife Management Areas, USA, during three waterfowl hunting seasons, December–January 2008–2011. Harvest of all ducks combined, mallard Anas platyrhynchos, northern shoveler Anas clypeata, or green-winged teal Anas crecca per hunter day did not differ between areas hunted 2 or 4 d/wk, but increased with hours

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22

Shirkey, Brendan T., John W. Simpson, and Michael A. Picciuto. "A 137-Year History of the Summer Avian Community at the Winous Point Marsh, Port Clinton, Ohio, USA." Ohio Journal of Science 119, no. 2 (2019): 48. http://dx.doi.org/10.18061/ojs.v119i2.6649.

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The Winous Point Marsh Conservancy and the Winous Point Shooting Club, with landholdings in both Sandusky and Ottawa Counties, Ohio, has completed a survey of the summer resident bird population on the property 4 times spanning 137 years. Although achieving a true census is unrealistic, these surveys have provided a unique, long-term history of changes in the avian community in northwest Ohio since the 1880s. Surveys were completed in 1880, 1930, 1960, and 2017. Draining and deforestation of the wetlands in northwest Ohio, by the late 1870s, resulted in the loss of many forested-wetland depend

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23

Khemis, Mohamed Dhaya El-Hak, Okba Boumaaza, Ettayib Bensaci, et al. "Diurnal behavior and pairing chronology of the Northern Shoveler wintering in unprotected remnant wetlands of north-eastern Algeria." Zoology and Ecology 27, no. 1 (2017): 11–18. http://dx.doi.org/10.1080/21658005.2016.1278321.

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St. James, Elizabeth A., Michael L. Schummer, Richard M. Kaminski, Edward J. Penny, and L. Wesley Burger. "Effect of Weekly Hunting Frequency on Duck Abundances in Mississippi Wildlife Management Areas." Journal of Fish and Wildlife Management 4, no. 1 (2013): 144–50. http://dx.doi.org/10.3996/042012-jfwm-034.

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Abstract Management of waterfowl habitat and hunting frequency is important to sustain hunting opportunities in Mississippi and elsewhere in North America. Managers have limited scientific information regarding the effect of weekly hunting frequency on waterfowl abundance for use in developing hunting plans for public hunting areas. We divided the hunted portions of three Mississippi Wildlife Management Areas into two treatments to evaluate the effect of hunting 2 versus 4 d/wk on duck abundance. Abundance of all ducks, mallard Anas platyrhynchos, northern shoveler Anas clypeata, and green-win

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Raquel, A. J., J. H. Devries, D. W. Howerter, R. T. Alisauskas, S. W. Leach, and R. G. Clark. "Timing of nesting of upland-nesting ducks in the Canadian prairies and its relation to spring wetland conditions." Canadian Journal of Zoology 94, no. 8 (2016): 575–81. http://dx.doi.org/10.1139/cjz-2016-0021.

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Timing of breeding varies among waterfowl species and individuals, with strong effects on reproductive success, and may be related to habitat quality. Here, we analyse the start, span, and end of the nesting season for nine upland-nesting duck species at 166 Canadian Prairie–Parkland sites over 34 years to better characterize nesting patterns and test whether and how species respond to May pond abundances. Nesting metrics were compared between single-site versus multiple-site studies over 7 years to evaluate the effects of spatial scale and methodology. Strong, consistent differences in start

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26

El Bakary, Neveen, Abu-Almaaty H., Sarah Ahmed, and Mohamed Hassan. "Comparative Morphological, Ultrastructural and Histological Studies on the Tongue of Eurasian Wigeon )Anas penelope) and Northern Shoveler )Anas clypeata)." Egyptian Academic Journal of Biological Sciences, B. Zoology 8, no. 1 (2016): 87–98. http://dx.doi.org/10.21608/eajbsz.2016.13466.

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27

Van Der Winden, Jan, Alhaji Siaka, Kenneth Gbenga, Sjoerd Dirksen, and Martin Poot. "First records for Sierra Leone of Eurasian Spoonbill Platalea Leucorodia, Northern Shoveler Anas clypeata and Terek Sandpiper Xenus cinereus." Bulletin of the African Bird Club 15, no. 1 (2008): 108–9. http://dx.doi.org/10.5962/p.309847.

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28

Nabil, Nehal M., Ahmed M. Erfan, Maram M. Tawakol, Naglaa M. Haggag, Mahmoud M. Naguib, and Ahmed Samy. "Wild Birds in Live Birds Markets: Potential Reservoirs of Enzootic Avian Influenza Viruses and Antimicrobial Resistant Enterobacteriaceae in Northern Egypt." Pathogens 9, no. 3 (2020): 196. http://dx.doi.org/10.3390/pathogens9030196.

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Wild migratory birds are often implicated in the introduction, maintenance, and global dissemination of different pathogens, such as influenza A viruses (IAV) and antimicrobial-resistant (AMR) bacteria. Trapping of migratory birds during their resting periods at the northern coast of Egypt is a common and ancient practice performed mainly for selling in live bird markets (LBM). In the present study, samples were collected from 148 wild birds, representing 14 species, which were being offered for sale in LBM. All birds were tested for the presence of AIV and enterobacteriaceae. Ten samples coll

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Gál, Erika, László Daróczi-Szabó, and Márta Daróczi-Szabó. "Bird Bone Remains from Two Medieval Settlements in Debrecen (Eastern Hungary)." Acta Archaeologica Academiae Scientiarum Hungaricae 71, no. 1 (2020): 199–218. http://dx.doi.org/10.1556/072.2020.00008.

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This paper presents results on three medieval avian bone assemblages found at Debrecen-Monostor-erdő and Debrecen-Tócó-part, respectively. Domestic chicken yielded most of the bird remains to evidence the exploitation of adult birds for egg production and flock maintenance in particular. In addition, feather harvesting and fat production could have been the target of goose (and possibly duck) husbandry. Although the goose bone sizes resemble the greylag goose, the keeping of an unimproved form of domestic goose rather than the hunting of the wild ancestor is suggested by the structure of the a

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Fleskes, Joseph P., Andrew M. Ramey, Andrew B. Reeves, and Julie L. Yee. "Body Mass, Wing Length, and Condition of Wintering Ducks Relative to Hematozoa Infection." Journal of Fish and Wildlife Management 8, no. 1 (2017): 89–100. http://dx.doi.org/10.3996/082016-jfwm-063.

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Abstract Waterfowl managers lack information regarding factors that may be reducing the positive response of waterfowl body condition to habitat improvements. Protozoan blood parasites (i.e., hematozoa) are commonly found in birds and have been related to reduced body mass, wing length, and body condition. We studied relationships between 12 measures of hematozoa infection and body mass, wing length, and body mass divided by wing length (i.e., body condition index) of the five most common duck species (northern pintail [Anas acuta], mallard [A. platyrhynchos], green-winged teal [A. crecca], Am

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Arzel, C., J. Elmberg, and M. Guillemain. "A flyway perspective of foraging activity in Eurasian Green-winged Teal, Anas crecca crecca." Canadian Journal of Zoology 85, no. 1 (2007): 81–91. http://dx.doi.org/10.1139/z06-201.

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Time–activity budgets in the family Anatidae are available for the wintering and breeding periods. We present the first flyway-level study of foraging time in a long-distance migrant, the Eurasian Green-winged Teal, Anas crecca crecca L., 1758 (“Teal”). Behavioral data from early and late spring staging, breeding, and molting sites were collected with standardized protocols to explore differences between the sexes, seasons, and diel patterns. Teal foraging activity was compared with that of the Mallard, Anas platyrhynchos L., 1758 and Northern Shoveler, Anas clypeata L., 1758, and the potentia

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Marchowski, Dominik, Łukasz Jankowiak, Łukasz Ławicki, and Dariusz Wysocki. "Waterbird counts on large water bodies: comparing ground and aerial methods during different ice conditions." PeerJ 6 (July 17, 2018): e5195. http://dx.doi.org/10.7717/peerj.5195.

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The aerial and ground methods of counting birds in a coastal area during different ice conditions were compared. Ice coverage of water was an important factor affecting the results of the two methods. When the water was ice-free, more birds were counted from the ground, whereas during ice conditions, higher numbers were obtained from the air. The first group of waterbirds with the smallest difference between the two methods (average 6%) contained seven species: Mute Swan Cygnus olor, Whooper Swan Cygnus cygnus, Greater Scaup Aythya marila, Tufted Duck Aythya fuligula, Common Goldeneye Bucephal

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NAVEDO, JUAN G., JOSÉ A. MASERO, JUAN M. SÁNCHEZ-GUZMÁN, et al. "International importance of Extremadura, Spain, for overwintering migratory dabbling ducks: a role for reservoirs." Bird Conservation International 22, no. 3 (2011): 316–27. http://dx.doi.org/10.1017/s0959270911000311.

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SummaryMany migratory waterbird populations are in decline and loss of natural wetlands is one of the main causes. However, some species may respond positively to artificial wetland recreation. In Extremadura (south-west Europe), several large reservoirs were created for irrigation since the 1960s and some comparatively small reservoirs were built from the late 1990s onwards close to rice fields. Here we analyse the abundance of wintering dabbling ducks (Anas spp.) in Extremadura before (1991–1994) and after (2007–2010) the creation of these new reservoirs in order to address the current impor

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Arikawa, Genki, Yoshinori Fujii, Maiku Abe, et al. "Meteorological factors affecting the risk of transmission of HPAI in Miyazaki, Japan." Veterinary Record Open 6, no. 1 (2019): e000341. http://dx.doi.org/10.1136/vetreco-2019-000341.

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Highly pathogenic avian influenza (HPAI) outbreaks engender a severe economic impact on the poultry industry and public health. Migratory waterfowl are considered the natural hosts of HPAI virus, and HPAI viruses are known to be transmitted over long distances during seasonal bird migration. Bird migration is greatly affected by the weather. Many studies have shown the relationship between either autumn or spring bird migration and climate. However, few studies have shown the relationship between annual bird migration and annual weather. This study aimed to establish a model for the number of

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Breed, William, John Hatch, Colin Rogers, Harry Roberts, and Ingrid Ahmer. "Effects of rainfall in the arid zone on waterbird abundance at a wastewater treatment plant in coastal South Australia." Australian Field Ornithology 40 (2023): 59–69. http://dx.doi.org/10.20938/afo40059069.

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We investigated which species of waterbirds at Bolivar, a wastewater treatment plant in Metropolitan Adelaide, South Australia, are likely to have been immigrants from the ephemeral wetlands in the arid zone. To do this, we compared the abundance of waterbird species observed at Bolivar during the dry period in the eastern arid zone of late 2018 and 2019 with that during the subsequent wet period 2020–2022. Pink-eared Duck Malacorhynchus membranaceus, Grey Teal Anas gracilis, Australasian Shoveler Spatula rhynchotis, Hardhead Aythya australis and Blue-billed Duck Oxyura australis were all more

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Drever, Mark C., Andreas Wins-Purdy, Thomas D. Nudds, and Robert G. Clark. "Decline of Duck Nest Success Revisited: Relationships With Predators and Wetlands in Dynamic Prairie Environments." Auk 121, no. 2 (2004): 497–508. http://dx.doi.org/10.1093/auk/121.2.497.

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Abstract Covariation among factors that may affect nest success of dabbling ducks in the Prairie Pothole Region of North America (e.g. productivity of upland and wetland habitat related to climate variation, and duck and predator densities) often confounds efforts to interpret the effect of any individual factor. A comparison of nest success of dabbling ducks at sites with and without predator management provided an opportunity to separate the effect of predation pressure from other factors because predator management has occurred over a range of climatic conditions. We updated an existing stu

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KIRIHARA, Masashi. "The first record of a hybrid individual between Northern Shoveler Anas clypeata and Gadwall A. strepera for Japan at Yatsu tidal flat, Chiba Prefecture." Japanese Journal of Ornithology 70, no. 1 (2021): 61–65. http://dx.doi.org/10.3838/jjo.70.61.

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McDuie, Fiona, Michael L. Casazza, David Keiter, et al. "Moving at the speed of flight: dabbling duck-movement rates and the relationship with electronic tracking interval." Wildlife Research 46, no. 6 (2019): 533. http://dx.doi.org/10.1071/wr19028.

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Abstract Context Effective wildlife management requires information on habitat and resource needs, which can be estimated with movement information and modelling energetics. One necessary component of avian models is flight speeds at multiple temporal scales. Technology has limited the ability to accurately assess flight speeds, leading to estimates of questionable accuracy, many of which have not been updated in almost a century. Aims We aimed to update flight speeds of ducks, and differentiate between migratory and non-migratory flight speeds, a detail that was unclear in previous estimates.

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Lameed, GA. "Species diversity and richness of wild birds in Dagona-Waterfowl sanctuary, Nigeria." African Journal of Food, Agriculture, Nutrition and Development 12, no. 53 (2012): 6460–78. http://dx.doi.org/10.18697/ajfand.53.9745.

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The study of bird species diversity and richness in Dagona-Waterfowl Sanctuary was carried out during the midst of both early wet and late dry seasons, to provide comprehensive data on wild birds. Dagona Sanctuary is located within the BadeNguru Wetland sector. It is one of the important bird areas marked for the conservation of avifauna species in sub-Sahara region, Nigeria. Line Transect method was used to carry out birds’ survey at three different lake sites, namely: Gatsu (site:1), Mariam (site: 2) and Oxbow (site: 3). The instruments used were GarminTM 12 Global Positioning System (GPS),

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MacCluskie, Margaret C., and James S. Sedinger. "Nutrient Reserves and Clutch-Size Regulation of Northern Shovelers in Alaska." Auk 117, no. 4 (2000): 971–79. http://dx.doi.org/10.1093/auk/117.4.971.

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Abstract We determined patterns of nutrient-reserve use by female Northern Shovelers (Anas clypeata) nesting at Minto Flats, Alaska, and compared them with those of female shovelers nesting in the Prairie Pothole Region of Manitoba, Canada. Individual variation in somatic lipid was best explained by nest initiation date; females that initiated nests early had larger lipid reserves than females that delayed nest initiation. These results contrast with those from Manitoba, which showed that females used lipid reserves and stored protein during egg production. Incubating females from Alaska did n

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DuBowy, Paul J. "Long-term foraging optimization in northern shovelers." Ecological Modelling 95, no. 2-3 (1997): 119–32. http://dx.doi.org/10.1016/s0304-3800(96)00040-3.

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Gupta, Rohtash Chand, Tirshem Kumar Kaushik, and Prem Kumari Gupta. "Analysis of avian-biodiversity in rural wetland environs in Panipat district in Haryana, India." Journal of Applied and Natural Science 4, no. 2 (2012): 252–57. http://dx.doi.org/10.31018/jans.v4i2.259.

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The present study has observed 67 species of wetland birds, belonging to, 10 orders and 18 families from rural wetland Environs in Panipat district located at a distance of 90 KMs north of Delhi on National Highway No.1 (29.39°N 76.97°E) in Haryana, India. Out of 67 species, 35 species were winter migrants, 18 residents, 10 local migrants and four species were summer migrants. Peculiar species of birds recorded in Panipat rural ponds are Painted Stork Mycteria leucocephala, White-necked Stork Ciconia episcopus, Asian openbill- Stork Anastomusoscitans, Lesser Adjutant Stork Leptoptilos javanicu

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Gupta, Rohtash Chand, Tirshem Kumar Kaushik, and Surjit Kumar. "An account concerning arrival and departure time of few selected winter migratory birds in Haryana rural ponds." Environment Conservation Journal 11, no. 1&2 (2010): 1–9. http://dx.doi.org/10.36953/ecj.2010.1201.

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The present study has been carried out in few selected Northern Districts of Haryana State for a period of three years w.e.f. 2005-08. Attention has been focused on winter migratory birds that sojourn in Haryana and other parts of north Haryana. These birds come to Haryana from far off places, across the rim of great Himalayas and beyond. Only eighteen birds’ departure and arrival time was recorded for study convenience. These migratory birds do not arrive in Haryana in one lot, on one date and at one time. Instead, these display a definite, pattern, decorum and time table, specific to species

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Gupta, Rohtash Chand, Tirshem Kumar Kaushik, and Surjit Kumar. "Evaluation of the extent of wetland birds in District Kaithal, Haryana, India." Journal of Applied and Natural Science 2, no. 1 (2010): 77–84. http://dx.doi.org/10.31018/jans.v2i1.101.

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Kaithal District is comprised of 2317 Km² Sq. Km area having six blocks Viz.:Kaithal, Kalayat, Pundri, Rajound, Ghula and Siwan located at a distance of 150 Kms from New Delhi toward North West. Its geographical position lies between 29° 48' 0 N latitude and between 76° 22' 60 E longitude.The present studies were carried between 2005-2008 with the help of Zenith Camera and telelens. In all, 63 species of Wetland birds belonging to 10 Orders, 38 genera and 16 families were observed in various village ponds in Kaithal District. Out of 63 species of wetland birds, 31 are winter migratory, 9 local

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Ankney, C. Davison, and Alan D. Afton. "Bioenergetics of Breeding Northern Shovelers: Diet, Nutrient Reserves, Clutch Size, and Incubation." Condor 90, no. 2 (1988): 459–72. http://dx.doi.org/10.2307/1368574.

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ELARABANY, N. F., G. A. ABDALLAH, and A. E. SAID. "Seasonal Variations of Steroid Hormones and Triiodothyronine Concentrations in Migratory Northern Shovelers." Journal of Experimental Zoology Part A: Ecological Genetics and Physiology 317, no. 4 (2012): 216–26. http://dx.doi.org/10.1002/jez.1715.

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MacCluskie, Margaret C., and James S. Sedinger. "Incubation Behavior of Northern Shovelers in the Subarctic: A Contrast to the Prairies." Condor 101, no. 2 (1999): 417–21. http://dx.doi.org/10.2307/1370008.

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DuBowy, Paul J. "Seasonal organ dynamics in post-breeding male blue-winged teal and northern shovelers." Comparative Biochemistry and Physiology Part A: Physiology 82, no. 4 (1985): 899–906. http://dx.doi.org/10.1016/0300-9629(85)90503-1.

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Roberts, Anthony J., and Michael R. Conover. "Breeding origins of Northern Shovelers (Anas Clypeata) wintering on the Great Salt Lake, Utah." Wilson Journal of Ornithology 127, no. 2 (2015): 233–38. http://dx.doi.org/10.1676/wils-127-02-233-238.1.

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Tietje, W. D., and J. G. Teer. "Winter Feeding Ecology of Northern Shovelers on Freshwater and Saline Wetlands in South Texas." Journal of Wildlife Management 60, no. 4 (1996): 843. http://dx.doi.org/10.2307/3802385.

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