. . . . . . . "1985-02-01T00:00:00Z"^^ . . "Pica hudsonia" . . "Malacosoma disstria" . . "Reebs, S. G. and D. A. Boag. 1987. Regurgitated pellets and late winter diet of Black-billed Magpies (Pica pica) in Central Alberta. Canadian Field-Naturalist 101:108-110." . . . . "Allen Hurlbert. 2017. Avian Diet Database." .