To celebrate JJ Audubon's Birthday download all Audubon Single Subject apps for only $0.99 each (Reg $4.99-$14.99)! Don't delay sale ends 4/29/13.An indispensable reference to over 600 butterfly species. Featuring comprehensive photos, and in-depth descriptions. Audubon Butterflies features 627 butterflies of the U.S. and Canada. This guide contains in-depth, authoritative information based on the National Audubon Societys "Field Guides to Butterflies," with updates by Rick Cech, a natural history author and one of the world's leading butterfly experts. Features: Professional color photographs detailing every species with extraordinary clarity. In-depth descriptions of every species, with authoritative information on appearance, habitat, range and much more. Journal feature allows you to track and annotate you personal sightings by location, and share with friends by email or Facebook. Advanced search functions by size, color, region, and more. Extensive reference section includes information on metamorphosis, evolution, observation tips, and detailed diagrams.About Audubon Guides: Audubon Guides are a comprehensive suite of digital field apps created in alliance with National Audubon Society (NAS). For more information, please see: http://natureshare.com/home.html#apps. About the Developer: Green Mountain Digital, the world's largest publisher of digital field guides, collectively generating over 1 million downloads; over 100 App Store promotions; and numerous awards. It was founded in 2009 in Woodstock, VT. The company has designed and published more than 75 mobile apps across multiple platforms, including Audubon Birds of North America, Orvis Fly Fishing: The Ultimate Guide, GardenMinder, Sailing World: Knots and Splices, FishBlue, and NatureTap. GMD is the creator of NatureShare, an innovative social platform that allows users to collect wildlife sightings and outdoor experiences and share them with others. Visit Us Today! www.natureshare.com Facebook: facebook.com/natureshare Twitter: @Nature_Share For any assistance, please email feedback@natureshare.com