presumed Yellow-billed Cuckoo nocturnal flight calls
Fig.2. Alabama April 16, 1990 (WRE).
Single gurgle from series.
Fig.3. Alabama April 20, 1990 (WRE).
Single gurgle from a series.
Fig.4. New York August 1, 1988 (WRE).
Single gurgle from a series.
Night flight call sequences:
1. Alabama April 16, 1990 (WRE). Gurgle series.
2. Alabama April 24, 1990 (WRE). Gurgle series.
3. Alabama April 24, 1990 (WRE). "Cauw" series with Chuck-will's-widow and Swainson's Thrush in the background.
4. Alabama April 24, 1990 (WRE). Gurgle series with Chuck-will's-widow in the background.
5. Alabama April 25, 1990 (WRE). Gurgle series.
6. Alabama April 26, 1990 (WRE). Gurgle series with Chuck-will's-widow in the background.
7. Louisiana April 20, 1990 (WRE). Gurgle series.
8. New York July 31, 1988 (WRE). Single gurgle.
9. New York August 1, 1988 (WRE). Gurgle series.