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Lesser Scaup
Aythya affinis
Order
ANSERIFORMES
– Family
ANATIDAE
Authors: Austin, Jane E., Christine M. Custer, and Alan D. Afton

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Adult male Lesser Scaup; California, January
Adult male Lesser Scaup; California, January
Adult male Lesser Scaup; Oregon, February.
Adult male Lesser Scaup; Oregon, February.