Blue-gray Gnatcatcher Polioptila caerulea
Flight call description A soft, mewing "bzew-bzew-bzew" (typically two to five notes).
Fig.1. New Jersey August 17, 2000 (MO).
Bird in flight.
Fig.2. New Jersey September 6, 2000 (MO).
Bird in flight with Black-throated Blue Warbler calling in the background.
Examples
Diurnal calling sequences:
1. New Jersey August 16, 2001 (MO). Bird in flight.
2. New Jersey August 17, 2000 (MO). Bird in flight.
3. New Jersey August 10, 1999 (MO). Bird in flight with Carolina Wren calling and singing in the background.
4. New Jersey August 17, 2000 (MO). Bird in flight.
5. New Jersey July 31, 2001 (MO). Bird in flight.
Similar species Distinctive.
Behavior Nocturnal migrant but engages in redetermined migration. Not known to give flight call at night.