Ds. Melman et Wa. Searcy, Microgeographic song discrimination in a nonterritorial passerine, the Boat-tailed Grackle, CONDOR, 101(4), 1999, pp. 845-848
We used playback in the held to test Boat-tailed Crackles (Quiscalus major)
for the ability to discriminate local songs from foreign songs. Male grack
les responded more strongly to songs recorded at their own colony than to s
ongs recorded at colonies 4-13 km distant. Female grackles showed little re
sponse to either local or foreign song.