. . . . . . . "1918-09-01T00:00:00Z"^^ . . "Riparia riparia" . . "Neohaemonia nigricornis" . . "Beal, F. E. L. 1918. Food habits of the swallows, a family of valuable native birds. U.S. Department of Agriculture, Bulletin 619." . . . . "Allen Hurlbert. 2017. Avian Diet Database." .