Milkriverblog directs us to this page on the U.S. Fish and Wildlife Service site. It includes a series of audio files to various sounds of animals. Unfortunately the page could seriously use an editor. Beyond that it could probably use writing by someone with better knowledge about wildlife. My favorite is "A indigo's bunt," though "A tundra of swans" and "Sounds of a leatherback flying into waves" are hard to beat. I guess the birds are taking up baseball these days.