The Sibley eGuide to Birds of North America

The Sibley Guide to Birds has become the most popular and fastest selling printed guide to birds as well as the most comprehensive and authoritative guide to North American Birds: Over 6600 images. Every species is shown perched and in flight from above and below. Shows every major seasonal, age, and male/female variation. Detailed coverage of subspecies and regional variations. Detailed maps showing not just winter and summer range but also migration and rare occurrence. Detailed descriptions of songs and calls, comparing similar species measurements of length, wingspan, and weight for every species. GPS capabilities to record your bird sighting coordinates.

*Uninstalling/reinstalling the program will result in the loss of your list, it is recommended that you keep your own backup (master list) separate from the application.

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The trial mode is available for 1 day. Thereafter the app will cease to work unless purchased.