. . . . . . . "1978-01-01T00:00:00Z"^^ . . "Aythya collaris" . . "Limnephilidae" . . "Hohman, W.L. 1985. Feeding ecology of ring-necked ducks in northwestern Minnesota. Journal of Wildlife Management 49:546-557." . . . . "Allen Hurlbert. 2017. Avian Diet Database." .