Geographical distribution of American gray flycatcher.    Breeding  Migration  Nonbreeding
Schlossberg, S. and J. C. Sterling (2013). Gray Flycatcher (Empidonax wrightii), version 2.0. In The Birds of North America (A. F. Poole, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi-org.acces.bibl.ulaval.ca/10.2173/bna.458
Cephas