Siegfried, W Roy
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Wildfowl 24 - Articles
Platform-building by male and female Ruddy Ducks
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Wildfowl 25 - Articles
Brood care, pair bonds and plumage in southern African Anatini
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Wildfowl 25 - Articles
Climbing ability of ducklings of some cavity-nesting waterfowl
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Wildfowl 28 - Articles
Notes on behaviour of Ruddy Ducks during the brood period
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