There are a couple of birding apps currently available at a discount at the Apple app store. Inexpensive way to have field guides available on your device. Peterson Birds of North America for 99¢ (reg 14.99) Audubon Birds - A Field Guide to North American Birds $ 2.99 Not sure how long the sales will last. Supposedly put on sale for Audubon's birthday. FYI Mike Poe Holston Community Blountville, TN