New standard for iPhone bird guides
Sibley has done it again! The best bird field guide in app form. Much like he did for paperback bird guides, the release of his Guide to Birds of North America for the iPhone has set a new bar for bird guides.
Lots and lots of accurate illustrations (Red-tailed Hawk gets 39 illustrations and 7 silhouettes) plus a good selection of bird calls make this a winner. The ability to compare two species on the screen at once really sets it apart. No other app can give you the amount of illustrations (male/female/juvenile/western/eastern/dark/light). If you are looking to identify birds you are seeing, this is your app.
Falco columbarius about
The Sibley eGuide, v1.9.1