↑Geffen, Eli, and Yoram Yom-Tov (2001) Factors affecting the rates of intraspecific nest parasitism among Anseriformes and Galliformes, Animal Behaviour, vol. 62, no. 6
↑Gill, Frank, and Minturn Wright (2006) , Birds of the World: Recommended English Names
↑Banks, R. C., R. W. McDiarmid, A. L. Gardner, and W. C. Starnes (2003) , Checklist of Vertebrates of the United States, the U.S. Territories, and Canada
↑Banks, R. C., R. W. McDiarmid, and A. L. Gardner (1987) Checklist of Vertebrates of the United States, the U.S. Territories, and Canada, Resource Publication, no. 166
