Geographical distribution of Eastern screech owl.
Ritchison, G., F. R. Gehlbach, P. Pyle, and M. A. Patten (2017). Eastern Screech-Owl (Megascops asio), 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.easowl1.03
Cephas