Siegfried, W R
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Wildfowl 20 - Articles
The proportion of yolk in the egg of the Maccoa Duck
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Wildfowl 21 - Articles
Wildfowl distribution, conservation and research in southern Africa
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Wildfowl 21 - Articles
Double wing-moult in the Maccoa Duck
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Wildfowl 29 - Articles
Territories and local movements of African Black Ducks
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Wildfowl 36 - Articles
Socially induced suppression of breeding plumage in the Maccoa Duck
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Wildfowl 39 - Articles
Sex and plumage-type ratios of the Lesser Magellan Goose in southern Chile
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