Geographical distribution of Pacific-slope flycatcher.    Breeding  Migration  Year-round  Nonbreeding
Lowther, P. E., P. Pyle, and M. A. Patten (2016). Pacific-slope Flycatcher (Empidonax difficilis), version 3.0. In The Birds of North America (P. G. Rodewald, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi-org.acces.bibl.ulaval.ca/10.2173/bna.pasfly.03
Cephas