. . . . . . . . "1910-12-01T00:00:00Z"^^ . . "Spinus psaltria" . . "Senecio vulgaris" . . "Beal, F. E. L. 1910. Birds of California in relation to the fruit industry, Part 2. U.S. Department of Agriculture Biological Survey Bulletin 34:1-96." . . . . "Allen Hurlbert. 2017. Avian Diet Database." .