The redhead is a medium-sized diving duck. Its scientific name is derived from Greek aithuia, an unidentified seabird mentioned by authors including Hesychius and Aristotle, and Latin americana, of Am
Redhead Aythya americana, Oakley Street, Cambridge, Maryland
A Readhead Hen Swimming with her Babies
Neck-stretching courtship ritual of the adult male redhead depicted in Audubon's Birds of America in 1843
The canvasback is a species of diving duck, the largest found in North America.
Redhead (bird)
…the genus Aythya, together with 11 other described species. The redhead and the common pochard form a sister group, which together are sister to the canvasback. This waterfowl is easily distinguished from most other ducks by the male's copper-colored head and pale blue bill during the breeding season; from its…
Aythya valisineria at Las Gallinas Wildlife Ponds
Drake canvasback stretching wings
Tubers of Sago Pondweed (Stuckenia pectinata), a favorite food of the canvasback