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Showing 1 to 6 of 6 for “"Anatidae"”.
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Functional Anatomy of the Feeding Apparatus in Waterfowl (Aves: Anatidae)
Made available in DSpace on 2014-12-04T22:45:49Z (GMT). No. of bitstreams: 1 0010483.pdf: 14603000 bytes, checksum: 8a2f473561dfd0489915e19250152c18 (MD5) Previous issue date: 1954
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Total evidence phylogeny of ducks, geese and swans(family Anatidae): implications for macroevolution andbiogeography
The neornithine bird family Anatidae comprises the ducks, geese and swans, and is one of the largest (approximately 150 species) and most studied families of modern birds. The fossil record of definitive anatids stretches from the Oligocene epoch to thepresent. However, the phylogeny of this family …
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Birds on Modified Wetlands in Eastern South Dakota
To examine the role of bird species (other than Anatidae) in the prairie wetlands ecosystem. Seven wetlands on Waterfowl Production Areas in eastern South Dakota were utilized to measure differences between bird communities in plots with dug brood complexes and non-modified plots. Thirty-eight …
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Behaviour of the cattle egret Ardeola ibis
… those of Lorenz (1941) and Johnsgard (1961) on Anatidae, have been based on behavioural characters, because many behaviour patterns are as conservative and species-constant as structural features are. For this reason, and because adequate behavioural studies have to date been carried out on only …
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Important bird areas in the southern part of West Iceland
… abundant species were ducks, geese and swans (Anatidae) **, followed by waders, gulls and relatives. Passerine birds and raptors were present in low numbers. Most of the recorded species breed and nest in Iceland, but some passage migrants, vagrants and wintering guests were also seen. A total …
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The Role of Climate Variability in Duck Population Ecology
Climate change is having profound impacts on animal populations globally, and is expected to become a stronger stressor in future, influencing abundance and persistence of many species. In northern hemisphere bird populations, local weather and climate cycles play important roles via effects on …