. . . . . . . . . "1971-01-01T00:00:00Z"^^ . . "Sialia sialis" . . "Gastropoda" . . "Pinkowski, B. C. 1978a. Feeding of nestling and fledgling eastern bluebirds. Wilson Bulletin 90:84-98." . . . . "Allen Hurlbert. 2017. Avian Diet Database." .