Geographical distribution of Western screech owl, with the addition of the borders of the states, provinces and territories of the United States, Canada and Mexico
Cannings, R. J., T. Angell, P. Pyle, and M. A. Patten (2017). Western Screech-Owl (Megascops kennicottii), 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.wesowl1.03
Cephas