Black-Capped Chickadee (Poecile atricapillus)

BirdSongbirdNorth America

Overview

The black-capped chickadee (Poecile atricapillus) is a small, round, active songbird of North American woodlands, instantly recognisable from its black cap and bib, white cheeks and soft grey back. It is one of the most familiar birds at winter feeders across Canada and the northern United States.

Chickadees are members of the tit family. They are famous for being tame around people, for hanging acrobatically from twigs while feeding, and for a call that carries a surprising amount of information.

The chick-a-dee-dee call is one of the best-studied vocalisations of any bird. The number of 'dee' notes at the end tends to increase with the level of threat, and other species listen in on it.

Habitat & Range

Black-capped chickadees live in deciduous and mixed woodland, forest edges, willow thickets, parks and wooded gardens across Canada and the northern United States. They are year-round residents rather than migrants, and they nest in cavities — excavating their own in soft rotten wood, or using old woodpecker holes and nest boxes.

Diet

Chickadees are omnivores whose diet shifts with the season: insects, spiders and other invertebrates dominate in summer, especially caterpillars fed to nestlings, while seeds, berries and fat become far more important in winter. They cache food extensively, hiding individual seeds and insects and recovering them later.

Behavior

Chickadees form winter flocks with a clear dominance structure, often joined by other small woodland birds that follow their alarm calls. Two behaviours stand out. First, food caching backed by strong spatial memory — the hippocampus of food-caching chickadees changes seasonally. Second, nightly torpor: on cold winter nights a chickadee lowers its body temperature substantially to save energy, a critical adaptation for a bird this small at those latitudes.

Human Interaction & Conservation

Chickadees are among the most-watched birds in North America, readily using feeders and nest boxes and often becoming confident enough to take food from a hand. That familiarity has made them a valuable research subject, and much of what is known about avian vocal complexity, food caching and winter energy management comes from work on this species. They remain common and widespread; verify current status at the IUCN Red List.

Sourced facts

Each value below is traced to the specific reference that states it, listed at the end of this section. Reviewed 2026-09-22.

Sourced facts about the Black-Capped Chickadee, with the reference supporting each
Fact	What the source states	Source
Body size	About 13.3 cm long, with a wingspan of about 20.3 cm	Animal Diversity Web
Weight	About 10.4–11 gThe account gives both figures in different sections; both are reproduced.	Animal Diversity Web
Lifespan	About 2.5 years on average in the wild; the oldest on record was 12.5 yearsAn average and a record maximum are different measures and are kept apart.	Animal Diversity Web
Geographic range	North America only, from Alaska across the southern half of Canada and south through the upper two-thirds of the United States	Animal Diversity Web
Habitat	Deciduous woodland, open woods and parks, cottonwood groves and willow thickets, extending into taiga; a frequent visitor to garden feeders	Animal Diversity Web
Diet	Roughly 70% animal and 30% plant — insects and spiders, with caterpillars preferred in the breeding season, plus conifer seeds and wax-covered berries	Animal Diversity Web
Activity pattern	Diurnal, and very active through the day	Animal Diversity Web
Social structure	Monogamous pairs that often stay together for several years; outside breeding, mixed-species flocks with dominance hierarchies	Animal Diversity Web

References for the facts above

UniversityAnimal Diversity Web — University of Michigan Museum of ZoologySupports: Body size, mass, lifespan, geographic range, habitat, diet, activity pattern and social structure. Retrieved 2026-09-22.Limitations: The account is filed under the older combination Parus atricapillus; this profile uses the current Poecile atricapillus. Same species, different generic placement. Figures are compiled from the literature and some are regional.

Frequently Asked Questions — Black-Capped Chickadee

What does the chick-a-dee call mean?

It is an alarm and contact call that carries information about threat. Broadly, the more 'dee' notes a chickadee adds to the end, the greater the danger it is signalling — with small, agile predators typically provoking more notes than large ones. Other bird species listen to these calls and respond to them.

How do chickadees survive freezing nights?

Partly through nightly torpor. On cold winter nights a chickadee lowers its body temperature well below its daytime level, which greatly reduces the energy it burns. Combined with dense winter plumage, sheltered roost cavities, and food cached earlier, this is what lets so small a bird survive northern winters.

Do chickadees store food?

Yes, extensively. They hide individual seeds and insects in bark crevices, moss and other spots, and recover them later using spatial memory. The brain region involved in that memory changes seasonally in food-caching chickadees, which has made them an important species for memory research.

What do chickadees eat?

Insects and spiders in summer — especially caterpillars, which are fed to nestlings — and seeds, berries and fat in winter. This seasonal switch, plus their willingness to use feeders, is why they are such a familiar winter garden bird.

Sources and further reading

Authoritative wildlife references used for general educational context. Conservation status should always be verified against current IUCN Red List data. External links open in a new tab.

UniversityAnimal Diversity Web — Poecile atricapillus (black-capped chickadee) — University of Michigan species account
UniversityCornell Lab of Ornithology — All About Birds — Cornell University ornithology reference for bird species
Wildlife referenceNational Audubon Society — Bird Guide — Bird identification and conservation reference