. . . . . . . "1971-01-01T00:00:00Z"^^ . . "Dendrocygna viduata" . . "Oryza sativa" . . "Bruzual, J. and I. Bruzual. 1983. Feeding habits of whistling ducks in the Calabozo Ricefields, Venezuela, during the non-reproductive period. Wildfowl 34:20-26." . . . . "Allen Hurlbert. 2017. Avian Diet Database." .