This tiny bird has a short neck and large head, giving it a distinctive, rather spherical body shape. It also has a long, narrow tail and a short bill a bit thicker than a warbler’s but thinner than a finch’s. They measure 12 to 15 centimeters in length, with a wingspan of 16 to 21 centimeters. The cap and bib are black, the cheeks white, the back soft gray, the wing feathers gray edged with white, and the underparts soft buffy on the sides grading to white beneath. The cap extends down just beyond the black eyes, making the small eyes tricky to see. Black-capped Chickadees seldom remain at feeders except to grab a seed to eat elsewhere. They are acrobatic and associate in flocks—the sudden activity when a flock arrives is distinctive. They often fly across roads and open areas one at a time with a bouncy flight. Chickadees may be found in any habitat that has trees or woody shrubs, from forests and woodlots to residential neighborhoods and parks, and sometimes weedy fields and cattail marshes. They frequently nest in birch or alder trees. This species is of low conservation concern.
- The Black-capped Chickadee hides seeds and other food items to eat later. Each item is placed in a different spot and the chickadee can remember thousands of hiding places.
- Every autumn Black-capped Chickadees allow brain neurons containing old information to die, replacing them with new neurons so they can adapt to changes in their social flocks and environment even with their tiny brains.
- Chickadee calls are complex and language-like, communicating information on identity and recognition of other flocks as well as predator alarms and contact calls. The more dee notes in a chickadee-dee-dee call, the higher the threat level.
- The oldest known wild Black-capped Chickadee was a male and lived to be at least 11 years, 6 months old.
Source: Black-Capped Chickadee Overview and Identification Information, All About Birds, The Cornell Lab of Ornithology