. . . . . . . . . "1969-06-01T00:00:00Z"^^ . . "Tyrannus verticalis" . . "Araneae" . . "Ohlendorf, H. M. 1974. Competitive relationships among kingbirds (Tyrannus) in trans-Pecos Texas. Wilson Bulletin 86:357-373." . . . . "Allen Hurlbert. 2017. Avian Diet Database." .