Thayer Birding Software presents the Cornell Lab of Ornithology's Guide to Birds of North America.  This interactive field guide is a CD-ROM field guide, including top-quality photos, crystal-clear songs and sonograms from the Cornell Lab of Ornithology.  Close-ups, songs, range and abundance maps are included along with hundreds of fun quizzes.  Identify over 900 birds, 2700 photos, 700 fun quizzes, 700 songs with sonograms.  iPod and MP3 Compatible. 

System Requirements:  Windows Vista, XP and 2000, 800 MHZ Processor, 612 MB RAM; CD-ROM Drive; 1 GB free space on hard drive.