iBird Guide to Birds of North America

Have it on apple, android and now windows. Interface, illustrations and pictures are great. My grandson loves to play with it. Make it faster if you can. Sibley looks good too.

Database is very large. Easy to limit database to my area(state). Love the pictures and lists of similar birds to verify my birds ID. One wish is to have female birds to be included in database.

Nice artwork and the bird photos are great. Lots of information, range maps, habitats etc. If you've used the iPhone app this one is easy to understand but not as comprehensive.

The search engine is great and easy to use. Tremendous amount of information provided for each specie. The text font is too small for my old eyes, and to my knowledge there is no way to enlarge the print.