For recordings of bird songs, call 612-673-7800, and when prompted press the following four-digit numbers:
1201 American goldfinch
1202 black-capped chickadee
1203 lark sparrow
1204 Northern cardinal
1205 prairie warbler
Recordings from the Library of Natural Sounds, Cornell Laboratory of Ornithology. Try the lab's website: www.birds.cornell.edu.
