For recordings of bird songs, call 612-673-7800, and when prompted press the following four-digit numbers:
1246 cliff swallow
1247 Eastern phoebe
1248 purple martin
1249 rose-breasted grosbeak
1250 wood thrush
1251 yellow-bellied flycatcher
Recordings from the Library of Natural Sounds, Cornell Laboratory of Ornithology. Try the lab's website: www.birds.cornell.edu.
