NatureSound Studio - Lang Elliott

http://www.naturesound.com/corepage/core.html

Bird Song Central: Birding By Ear -- Spring Tune-Up

http://www.virtualbirder.com/bbestu/

Songs and calls of some New York State birds

http://www.math.sunysb.edu/

tony/birds/

On The Wing

http://onthewing.libsyn.com/

North American Bird Sounds

http://www.naturesongs.com/birds.html

Birdsong IdentiFlyer : Audio Birdsong Dictionary

http://www.identiflyer.com/

Cornell Lab of Ornithology

http://www.birds.cornell.edu/ivory/multimedia/sounds#documentContent

Frogs and Toads of Georgia

http://wwknapp.home.mindspring.com/GAFrog.Toad.html

Guide to Animal Sounds on the Net

http://members.tripod.com/Thryomanes/AnimalSounds.html

Australian National Botanic Gardens

http://www.anbg.gov.au/sounds/

BirdSong Mnemonics by Tomm Lorenzin

http://www.1000plus.com/BirdSong/birdsngb.html

Naturesongs Digital Recordings and Photos from Nature!

http://www.naturesongs.com/

Nature Recordists' E-Mail Group

http://www.naturesongs.com/recordists/naturerecordists.html

Nature Sound Design

http://www.wildsanctuary.com/

The Nature Sounds Society

http://www.naturesounds.org./

Nature sound CDs free of music from Natureguy Studio

http://www.natureguystudio.com/

Bird songs on CD from Neville Recording

http://www.nevillerecording.com/

Natural History Education

Science

Technology

http://www.nhest.org/

Species Audio Library

http://www.uwgb.edu/birds/wbba/speciesaudios.htm

Wildlife sounds from the British Library

http://www.bl.uk/collections/sound-archive/wild.html