For recordings of bird songs, call 612-673-7800, and when prompted press the following four-digit numbers:
1238 black-backed woodpecker
1237 common yellowthroat
1236 house wren
1235 Northern flicker
1234 Wilson's warbler
Recordings from the Library of Natural Sounds, Cornell Laboratory of Ornithology. Try the lab's website: www.birds.cornell.edu.
