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

1213 Canada warbler

1214 hairy woodpecker

1215 mountain bluebird

1216 orange-crowned warbler

1217 orchard oriole

1218 red-winged blackbird

1219 rock dove (pigeon)

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