Carolina chickadee

Carolina chickadee
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Family: Paridae
Genus: Poecile
Species:
P. carolinensis
Binomial name
Poecile carolinensis
(Audubon, 1834)
Range of P. carolinensis
Synonyms

Parus carolinensis

The Carolina chickadee (Poecile carolinensis) is a small, non-migratory passerine bird in the tit family Paridae. It has a black cap and bib, and distinctive white cheeks. The bird looks extremely similar to the black-capped chickadee. It is largely found in the southeastern and central United States.

Taxonomy

The Carolina chickadee was often placed in the genus Parus with most other tits, but mtDNA cytochrome b sequence data and morphology suggest that separating Poecile more adequately expresses these birds' relationships. The American Ornithologists' Union has been treating Poecile as distinct genus since 1998. Although it and the black-capped chickadee most likely diverged about 2.5 million years ago, the birds still hybridize in the areas where their ranges overlap. The offspring of mated pairs of hybrid chickadees suffer from lower hatching success, and a male bias sex ratio, consistent with Haldane's rule.

Description

Adults are 10–12 cm (3.9–4.7 in) long with a weight of 8–12 g (0.28–0.42 oz) and a wingspan of 15–20 cm (5.9–7.9 in), and have a black cap and bib with white sides to the face. Their underparts are white with rusty brown on the flanks; their back is gray. They have a short dark bill, short wings and a moderately long tail. Very similar to the black-capped chickadee, the Carolina chickadee is distinguished by the slightly browner wing with the greater coverts brown (not whitish fringed) and the white fringing on the secondary feathers slightly less conspicuous; the tail is also slightly shorter and more square-ended. Without calls, visual distinction between the two species is very difficult even with an excellent view.

Eggs are about 1.5 cm (0.6 in) long and 1.1 cm (0.4 in) wide. Eggs are white with areas of reddish-brown ranging from dots to small blotches.

Vocalization

The calls and song between the Carolina chickadee and the black-capped chickadee differ subtly to an experienced ear: the Carolina chickadee's chick-a-dee call is faster and higher-pitched than that of the black-capped chickadee, and the Carolina chickadee has a four-note see-dee-see-dee song, whereas the black-capped chickadee has a two- or three-note song. In areas where the habitat of the Carolina chickadee and black-capped chickadee overlap, they can mimic each other's songs.

The origin of this bird name is onomatopoeic, a vocal imitation of its call. Native Americans called it tsi’kilili’. In English the sound was rendered as chickadee-dee-dee.

Distribution and habitat

A Carolina chickadee cavity nest site, previously made by a red-bellied woodpecker

Their breeding habitat is mixed or deciduous forests in the United States from New Jersey and Pennsylvania west to southern Kansas and south to Florida and Texas; there is a gap in the range at high altitudes in the Appalachian Mountains where they are replaced by their otherwise more northern relative, the black-capped chickadee.

They are permanent residents, not usually moving south even in severe winter weather.

Behavior and ecology

During the winter, chickadees often flock together. Each of the birds in a flock has a rank and in the spring, highly ranked birds will remain on the flock's territory for breeding, while lower-ranked birds must find new breeding territory. Many other species of birds, including titmice, nuthatches, and warblers can often be found foraging in these flocks. Mixed flocks occur about 50% of the time. Mixed flocks stay together because the chickadees call out whenever they find a good source of food. This calling out forms cohesion for the group, allowing the other birds to find food more efficiently.

Carolina chickadees actively defend individual spaces of 2–5 ft (0.6–1.5 m) apart; if another bird encroaches on these spaces, the dominant bird may make gargle calls. At feeders, these birds will usually take a seed and fly to a branch isolated from other birds to eat it. A 2022 study found that in high-quality foraging habitats, Carolina chickadees exhibit higher rates of gargle calls compared to low-quality foraging habitats.

These birds usually sleep in cavities, though they may sleep in branches. Different members of a flock will sleep in the same cavity from night to night. While females usually sleep in the nest cavity, males will normally sleep on a nearby branch.

Breeding

The Carolina chickadee nests in a hole in a tree; mating pairs excavate the nest, using a natural cavity or sometimes an old woodpecker nest. They may interbreed with black-capped chickadees where the ranges overlap, which can make identification even more difficult. The female will build the nest out of moss and strips of bark; she will then line it with hair or plant fibers. Clutches are usually made up of 3–10 eggs with an incubation period of 12–16 days. The nestling period is usually 16–19 days.

Food and feeding

Carolina chickadees hop along tree branches searching for insects, sometimes hanging upside down or hovering; they may make short flights to catch insects in the air. Insects form a large part of their diet, especially in summer; seeds and berries become important in winter. They sometimes hammer seeds on a tree or shrub to open them; they also will store seeds for later use. Carolina chickadees commonly make use of feeders.

Survival

Carolina chickadees are able to lower their body temperatures to induce an intentional state of hypothermia called torpor. They do this to conserve energy during extremely cold winters. In extreme cold weather conditions they look for cavities where they can hide in and spend up to fifteen hours at a time in torpor. During this time they are awake but unresponsive; they should not be picked up and handled at this time because the stress of being held may cause death.

Carolina chickadee on a branch

In culture

The Carolina chickadee is recognized in Native American oral traditions as a news bringer and truth teller. Its presence and song appear in many stories as a harbinger of reconnection with an absent friend, or of impending trouble from a covert adversary. The Carolina chickadee is especially venerated in Cherokee tradition for its role in the defeat of "U`tlûñ'ta, The Spearfinger," a monster and witch whose food was human livers.

References

  1. ↑ BirdLife International (2025). "Poecile carolinensis". IUCN Red List of Threatened Species. 2025 e.T22711708A137667085. doi:10.2305/IUCN.UK.2025-2.RLTS.T22711708A137667085.en.
  2. ↑ Gill, Frank B.; Slikas, Beth; Sheldon, Frederick H. (1 January 2005). Fleischer, R. C. (ed.). "Phylogeny of Titmice (Paridae): II. Species Relationships Based on Sequences of the Mitochondrial Cytochrome-B Gene". The Auk. 122 (1): 121–143. doi:10.1093/auk/122.1.121. ISSN 1938-4254.
  3. ↑ American Ornithologists' Union. 1998. Check-list of North American birds. 7th edition Washington, D.C.: American Ornithologists' Union.
  4. 1 2 3 4 5 6 7 "Carolina Chickadee Overview, All About Birds, Cornell Lab of Ornithology". www.allaboutbirds.org. Retrieved 18 November 2021.
  5. ↑ Driver, R; Ferretti, V; Burton, E; McCoy, M; Curry, R (2022). "Spatiotemporal variation in hatching success and nestling sex ratios track rapid movement of a songbird hybrid zone". The American Naturalist. 200 (2): 264–274. Bibcode:2022ANat..200..264D. doi:10.1086/720207. PMID 35905404. S2CID 247888374.
  6. 1 2 "Carolina Chickadee | Audubon Field Guide". www.audubon.org. Retrieved 17 September 2026.
  7. ↑ Wells, Diana (2002). 100 birds and how they got their names. Chapel Hill, N.C.: Algonquin Books of Chapel Hil. p. 254. ISBN 9781565122819.
  8. 1 2 3 Mooney, James (1972). Myths of the Cherokee and sacred formulas of the Cherokees (Repr ed.). Nashville, Tenn: Charles Elder - Booksellers. pp. 281–285, 316–317. ISBN 978-0-918450-22-7. Retrieved 2 February 2026.
  9. ↑ "Carolina Chickadee Sounds, All About Birds, Cornell Lab of Ornithology". www.allaboutbirds.org. Retrieved 1 February 2026.
  10. ↑ "Carolina Chickadee Life History". All About Birds. Cornell Lab of Ornithology. Behavior.
  11. ↑ Richardson, Katherine E. (Gentry); Roche, Daniel P.; Mugel, Stephen G.; Lancaster, Nolan D.; Sieving, Kathryn E.; Freeberg, Todd M.; Lucas, Jeffrey R. (2 February 2022). "Social dynamics of core members in mixed-species bird flocks change across a gradient of foraging habitat quality". PLOS ONE. 17 (2) e0262385. Public Library of Science. Bibcode:2022PLoSO..1762385G. doi:10.1371/journal.pone.0262385. ISSN 1932-6203. PMC 8809581. PMID 35108278.
  12. ↑ Del Hoyo, J., Elliot, A., & Christie D. (eds). (2007). Handbook of the Birds of the World. Volume 12: Picathartes to Tits and Chickadees. Lynx Edicions.  ISBN 978-84-96553-42-2