The Four Keys to ID
- Size & Shape
Tiny, large-headed but small-billed, with a rather long, narrow tail and short, rounded wings.
Relative Size
The smallest, shortest-tailed chickadee
sparrow-sized or smallerMeasurements
- Both Sexes
- Length: 3.9-4.7 in (10-12 cm)
- Weight: 0.3-0.4 oz (7-12 g)
- Wingspan: 7.5 in (19 cm)
- Color Pattern
- Behavior
- Habitat
Regional Differences
Chestnut-backed Chickadees have dark chestnut flanks over most of their range, but birds from the central California coast (from Marin County southward) have gray flanks with limited chestnut toward the tail.