. . . . . . . . . "1940-01-01T00:00:00Z"^^ . . "Xanthocephalus xanthocephalus" . . "Hordeum" . . "Knowlton, G.F. 1947. Some Insect Food of the Yellow-Headed Blackbird. Auk 64(3):459" . . . . "Allen Hurlbert. 2017. Avian Diet Database." .