The comprehensive Peterson Birds — A Field Guide to Birds of North America is on sale in the iTunes store for Labor Day weekend. Regularly priced at $14.99, you can download the digital version of the popular guide for just $0.99 through this weekend. Act fast, this is a limited deal! Link: Peterson Birds — A Field Guide to Birds of North America or search the app store on your device.
Remember that August 30 – September 2 is the second Common Nighthawk Weekend of the year! The Common Nighthawk is the American Birding Association Bird of the Year for 2013. Go out and look for them this weekend! The above screenshots from the Peterson app are a good start. 🙂