Thayer Birding Software - Popular bird identification and record keeping software, with newsletters, discussion group, and checklists. Flying Emu - Map List software for North American and world birding lists, plus many links. Bird Songs International - Detailed descriptions of CD-ROMs Birds of Bolivia, Birds of Venezuela, and Birds of Tropical Asia. TweetChirp Assistant - Plays bird calls and records sightings on a Windows CE based personal organizer. Wildlife Computing - Bird Recorder 32 and Pocket Bird Recorder programs for keeping track of sightings of birds, butterflies, and dragonflies. EnjoyBirds - Information about this digital illustrated guide for identifying birds and bird calls of North and Central America, Hawaii, and the Caribbean. Eremaea Birds - On-line personal bird listing with access to a global database. Better Birdwatching - Videos and software for identifying birds in the western North America. Wildlife Acoustics - Manufactures and markets the Song Sleuth digital birdsong detective, which claims to automatically identifies birds from their songs in the field.