. . . . . . . "1914-01-01T00:00:00Z"^^ . . "Turdus migratorius" . . "Amara" . . "Beal, F. 1915. Food of the robins and bluebirds of the United States. Bulletin of the U.S. Department of Agriculture 171:1-31." . . . . "Allen Hurlbert. 2017. Avian Diet Database." .