. . . . . . . "1995-01-01T00:00:00Z"^^ . . "Cygnus buccinator" . . "Carex" . . "Squires, J.R. and S.H. Anderson. 1995. Trumpeter swan (Cygnus buccinator) food habits in the Greater Yellowstone Ecosystem. American Midland Naturalist 133:274-282." . . . . "Allen Hurlbert. 2017. Avian Diet Database." .