. . . . . . . . "1908-04-01T00:00:00Z"^^ . . "Pheucticus melanocephalus" . . "Chrysomela scripta" . . "Mcatee, W. L. 1908. Food habits of the grosbeaks. U.S. Department of Agriculture Biological Survey Bulletin 32." . . . . "Allen Hurlbert. 2017. Avian Diet Database." .