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Quick Reference
In-depth descriptions of over 720 butterflies and 760 birds found in North America. Over 6,000 color photographs detailing each species. A detailed reference section, which includes searching many parts of a butterfly. A library of over 2,300 bird songs and calls. With new search features, now you can identify birds by wing shape, locomotion, song type, song pattern, and likelihood by month, within state and province.

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Last Updated: July 31, 2017