For recordings of bird songs, call 612-673-7800, and when prompted press the following four-digit numbers:

1227 Baltimore oriole (Northern race)

1226 indigo bunting

1225 pine warbler

1224 scarlet tanager

1223 yellow-rumped warbler

1222 yellow-throated warbler

Recordings from the Library of Natural Sounds, Cornell Laboratory of Ornithology. Try the lab's website: www.birds.cornell.edu.