All links of Kerriidae

Redhead (Aythya americana)

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Canvasback (Aythya valisineria)

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Ring-necked Duck (Aythya collaris)

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The Lesser Scaup

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Lesser Scaup (Aythya affinis)

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Redhead: Aythya americana

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Canvasback: Aythya valisineria

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Ring-necked Duck: Aythya collaris

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Greater Scaup: Aythya marila

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Lesser Scaup: Aythya affinis

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Kerriidae related site:

• Dainik Bhaskar

• Times of India

• Prothom Alo

• Dainik Jagran

• University of Southampton

• Kay, Terry

• Kellerman, Lois

• Klam, Matthew

• Konrath, Jon

• Karon, Jan