This genus includes the Canvasback, the Redhead, the Hardhead, the Scaups, and some species of ducks and pochards.
Sites 10
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- Redhead (Aythya americana) Facts about this species' reproduction, ecology, and behavior. Includes a photo, sound file, and range map.
- Canvasback (Aythya valisineria) Provides photos, identification tips, abundance maps, and a taxonomy chart for this species.
- Ring-necked Duck (Aythya collaris) Identification tips, range maps, taxonomy chart, and life history. Includes photos.
- The Lesser Scaup Student project on Aythya affinis with classification, habitat, adaptation, diet, reproduction and interactions with other species.
- Lesser Scaup (Aythya affinis) Photograph plus facts about the physical traits, reproduction, and habitat of this bird.
- Redhead: Aythya americana Introduction to this species, from Birds of North America Online, with a photograph and range map.
- Canvasback: Aythya valisineria Introduction to this species, from Birds of North America Online, with a photograph and range map.
- Ring-necked Duck: Aythya collaris Introduction to this species, from Birds of North America Online, with a photograph and range map.
- Greater Scaup: Aythya marila Introduction to this species, from Birds of North America Online, with a photograph and range map.
- Lesser Scaup: Aythya affinis Introduction to this species, from Birds of North America Online, with a photograph and range map.