![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 Artic Lands to the Isthmus of Panama, the West Indies and Other Islands of the Caribbean Sea, and the Galapagos Archipelago. Part XI: Family Cathartidae-The American Vultures; Family Accipitridae-The Hawks, Eagles, Kites, Harriers, and Old World Vultures; Family Pandionidae-The Ospreys; Family Falconidae-The Falcons and Caracaras.by Herbert Friedmann]()
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 Artic Lands to the Isthmus of Panama, the West Indies and Other Islands of the Caribbean Sea, and the Galapagos Archipelago. Part XI: Family Cathartidae-The American Vultures; Family Accipitridae-The Hawks, Eagles, Kites, Harriers, and Old World Vultures; Family Pandionidae-The Ospreys; Family Falconidae-The Falcons and Caracaras.by Herbert FriedmannReview by: Henri C. Seibert · The Quarterly Review of Biology · 1952