Sites:
| Canvasback (Aythya valisineria): Provides photos, identification tips, abundance maps, and a taxonomy chart for this species. | | Common Pochard (Aythya ferina): Offers a photo of this bird and describes its range and feeding habits. | | Greater scaup (Aythya marila): Breeding, migration, population, food habits, and physical characteristics. Includes photographs and a sound file. | | Lesser scaup (Aythya affinis): Photo plus facts about the physical traits, reproduction, and habitat of this bird. | | Redhead (Aythya americana): Facts about this species' reproduction, ecology, and behavior. Includes a photo, sound file, and range map. | | Ring-necked Duck (Aythya collaris): Identification tips, range maps, taxonomy chart, and life history. Includes photos. |
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Classical
