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Birds of the World is a powerful resource that brings deep, scholarly content from four celebrated works of ornithology into a single platform where biologists and birders can find comprehensive life history information on birds.
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23 Νοε 2021 · 1.2G. 384 p. : 26 cm. "Featuring every bird family worldwide, with more than 900 illustrations, photographs, and maps"--Cover. Includes bibliographical references (p. 364-367) and index.
Avibase is an extensive database information system about all birds of the world, containing over &1 million records about 10,000 species and 22,000 subspecies of birds, including distribution information for 20,000 regions, taxonomy, synonyms in several languages and more.