. . . . . . . "1969-01-01T00:00:00Z"^^ . . "Aythya americana" . . "Tracheophyta" . . "Bartonek, J.C. and J.J. Hickey. 1969. Food habits of canvasbacks, redheads, and lesser scaup in Manitoba. Condor 71:280-290." . . . . "Allen Hurlbert. 2017. Avian Diet Database." .