presumed Chestnut-sided Warbler nocturnal flight calls
Fig.4. New York September 1, 1992 (WRE).
Fig.5. New York September 5, 1992 (WRE).
Fig.6. New York September 5, 1992 (WRE).
Fig.7. New York September 1, 1992 (WRE).
Fig.8. New Jersey September 11, 2001 (MO).
Fig.9. New York August 29, 1995 (WRE).
Uncommon double-banded variation