. . . . . . . "1980-01-01T00:00:00Z"^^ . . "Aythya valisineria" . . "Tracheophyta" . . "Jarvis, R.L. and J.H. Noyes. 1986. Foods of canvasbacks and redheads in Nevada: paired males and ducklings. Journal of Wildlife Management 50:199-203." . . . . "Allen Hurlbert. 2017. Avian Diet Database." .