presumed Black-billed Cuckoo nocturnal flight calls
Fig.3. Alabama April 24, 1990 (WRE).
Fig.4. Louisiana April 20, 1990 (WRE). Note insect song at 4.5 kHz.
Fig.5. New York August 16, 1989 (WRE).
Nocturnal flight call examples:
1. New York August 7, 1989 (WRE).
2. New York August 7, 1989 (WRE).
3. New York August 7, 1989 (WRE). Stereo cut with presumed Ovenbird nocturnal flight call and distant chorus of Green Frogs.