. . . . . . . . "1965-01-01T00:00:00Z"^^ . . "Empidonax difficilis" . . "Ichneumonidae" . . "Beaver, D.L. and P.H. Baldwin. 1975. Ecological overlap and the problem of competition and sympatry in the Western and Hammond's Flycatchers. Condor 77: 1-13." . . . . "Allen Hurlbert. 2017. Avian Diet Database." .