Watercolor portrait of Blue-gray Gnatcatcher (Polioptila caerulea)

Blue-gray Gnatcatcher

Polioptila caerulea
Common Migrant Quick mews at first light

Learn to identify the Blue-gray Gnatcatcher by ear. Master the "high nasal mews" phrase and tell it apart from similar species.

“zeee... zeee... zeee!”

What the Blue-gray Gnatcatcher sounds like

Bright, catlike notes spill out in a quick series at dawn. These are calls, not the species’ longer rambling song.

How to tell it apart

Listen for: “high nasal mews”
Don't confuse with the California Gnatcatcher. Has distinctive mewing call unlike the thin, wheezy calls of Blue-gray Gnatcatcher.

Lessons featuring the Blue-gray Gnatcatcher

Ready to test your ear? Practice identifying the Blue-gray Gnatcatcher's sounds in this interactive in-app lesson.

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Where you'll hear it

Migratory in northern parts of range; resident in southern United States and Mexico. Northern populations winter in Mexico and Central America.

Found in a variety of wooded habitats including open deciduous woodlands, mixed forests, pine-oak woodlands, riparian corridors, and scrubby areas. In the eastern United States, often associated with oak forests. In the West, found in pinyon-juniper woodlands, mesquite, and desert riparian areas.

Breeds from March to August depending on latitude. Northern populations arrive on breeding grounds in April and depart by September. Year-round residents in southern range may begin nesting as early as February.

How to recognize it by sight

A diminutive, slender songbird with a long tail that it frequently flicks from side to side. Blue-gray above and grayish-white below with a distinctive white eyering. Males have a black forehead and eyebrow during breeding season. Constantly active, moving through foliage with quick, nervous movements while searching for tiny insects.

Similar species

Black-tailed Gnatcatcher

Found only in southwestern United States and Mexico.

California Gnatcatcher

Limited to coastal southern California and Baja California.

Ruby-crowned Kinglet

Olive-green rather than blue-gray.

Blue-gray Gnatcatcher song FAQ

What does a Blue-gray Gnatcatcher sound like?
Bright, catlike notes spill out in a quick series at dawn. These are calls, not the species’ longer rambling song. Listen for the "high nasal mews" phrase.
How do I tell a Blue-gray Gnatcatcher from a California Gnatcatcher by sound?
California Gnatcatcher: Has distinctive mewing call unlike the thin, wheezy calls of Blue-gray Gnatcatcher.
When is the best time to hear a Blue-gray Gnatcatcher?
Breeds from March to August depending on latitude. Northern populations arrive on breeding grounds in April and depart by September. Year-round residents in southern range may begin nesting as early as February.