For recordings of bird songs, call 612-673-7800, and when prompted press the following four-digit numbers:
1241 black-throated green warbler
1243 common yellowthroat
1244 downy woodpecker
1245 hairy woodpecker
1247 red-winged blackbird
1248 yellow-rumped warbler
Recordings from the Library of Natural Sounds, Cornell Laboratory of Ornithology. Try the lab's website: www.birds.cornell.edu.
