Birds of the World (BOW) is the most comprehensive collection of ornithological life histories ever created. Not only is it taxonomically complete at 10,834 bird species and 249 families, but it is masterfully woven with multimedia from Macaulay Library and dynamic range maps from eBird. It is rich and varied in content, data, and insights backed by hundreds of thousands of science citations. BOW features color illustrations of every bird species and many subspecies. A visual taxonomy explorer lets users zoom into the birds of their region. No other resource is as comprehensive, dynamic, and easy-to-use.