. . . . . . . . "1987-03-01T00:00:00Z"^^ . . "Anas acuta" . . "Oryza sativa" . . "Miller, M.R. 1987. Fall and winter foods of northern pintails in the Sacramento Valley, California. Journal of Wildlife Management 51:405-414." . . . . "Allen Hurlbert. 2017. Avian Diet Database." .