- ^ Ridgway, Robert; Friedmann, Herbert (1911-01-01). The Birds of North and Middle America: A Descriptive Catalog of the Higher Groups, Genera, Species, and Subspecies of Birds Known to Occur in North America, from the Arctic Lands to the Isthmus of Panama, the West Indies and Other Islands of the Caribbean Sea, and the Galapagos Archipelago. U.S. Government Printing Office. p. 297.
|This article is part of Project Glossary, a All Birds project that aims to write comprehensive articles on each term related to animals.|