Ridgway's 'Birds of North and Middle America.' Part I The Birds of North and Middle America: A Descriptive Catalogue 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. Part I Robert Ridgway
Ridgway's 'Birds of North and Middle America.' Part I The Birds of North and Middle America: A Descriptive Catalogue 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. Part I Robert Ridgway