Recommended Citation

Winkler, D. W., S. M. Billerman, and I.J. Lovette (2020). Cormorants and Shags (Phalacrocoracidae), version 1.0. In Birds of the World (S. M. Billerman, B. K. Keeney, P. G. Rodewald, and T. S. Schulenberg, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.phalac1.01