Canada Jay
Canada Jay
Perisoreus canadensis
At a Glance
A hiker in the north woods sometimes will be followed by a pair of Canada Jays, gliding silently from tree to tree, watching inquisitively. These fluffy jays seem fearless, and they can be a minor nuisance around campsites and cabins, stealing food, earning the nickname 'camp robber.' Tough enough to survive year-round in very cold climates, they store excess food in bark crevices all summer, retrieving it in harsh weather. Surprisingly, they nest and raise their young in late winter and early spring, not during the brief northern summer.
All bird guide text and rangemaps adapted from by Kenn Kaufman漏 1996, used by permission of Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Category
Crows, Magpies, Jays, Perching Birds
IUCN Status
Least Concern
Habitat
Forests and Woodlands, High Mountains, Tundra and Boreal Habitats
Region
Alaska and The North, California, Eastern Canada, Great Lakes, Mid Atlantic, New England, Northwest, Plains, Rocky Mountains, Southwest, Western Canada
Behavior
Direct Flight, Flap/Glide
Population
27.000.000
Range & Identification
Migration & Range Maps
No regular migration. Birds in high mountains of west rarely move to lower elevations in winter. On rare occasions, small invasions of Canada Jays will move a short distance out of boreal forest in winter.
Description
10-13" (25-33 cm). Fluffy and gray, paler below. Head pattern varies by region: blackish patch on nape may be very limited or may extend to top of head. Juvenile is mostly dark charcoal gray at first, with paler whisker mark.
Size
About the size of a Crow, About the size of a Robin
Color
Black, Gray, White
Wing Shape
Broad, Fingered, Rounded
Tail Shape
Long, Rounded, Wedge-shaped
Songs and Calls
Whee-ah, chuck-chuck; also scolds, screams, and whistles.
Call Pattern
Falling, Flat
Call Type
Chirp/Chip, Rattle, Scream, Trill, Whistle
Habitat
Spruce and fir forests. Found in various kinds of coniferous and mixed forest, but rarely occurs where there are no spruce trees. Habitats include black spruce bogs in eastern Canada, forests of aspen and Engelmann spruce in Rockies, Sitka spruce and Douglas-fir on northwest coast.
Sign up for 爆料公社's newsletter to learn more about birds like the Canada Jay
Behavior
Eggs
3-4, sometimes 2-5. Pale gray to greenish, dotted with brown, olive, or reddish. Incubation is by female only, about 18-22 days. Male sometimes brings food to female on nest.
Young
Female broods young most of time at first while male brings food; later, both parents bring food to nest. Young leave nest at about 22-24 days, remain with parents for at least another month.
Feeding Behavior
An opportunist in its foraging, flying from tree to tree searching for food. Boldly enters campsites and even cabins to steal food. Will attack rodents and small birds. Sometimes flies out to catch insects in mid-air. Regularly eats carrion, especially in winter, coming to kills left by wolves or other predators. Stores food items throughout the year, especially in summer, and may live on these caches in severe winter weather; the bird's sticky saliva helps it stick pieces of food in bark crevices and other spots. Can carry food items, even fairly large ones, in flight, sometimes carrying them with its feet.
Diet
Omnivorous. Diet is remarkably varied, includes insects, spiders, berries, seeds, fungi, small rodents, birds' eggs, and carrion.
Nesting
Mated pairs stay together all year, and defend permanent territories. Early in breeding season, male may perform courtship feeding of female. Nesting begins remarkably early, during late winter, while breeding grounds still snow-covered. Nest site is in dense conifer, close to trunk at base of branch; usually fairly low, averaging about 15' above the ground. Nest (built by both sexes) is a bulky flat cup of twigs, lichens, strips of bark, and caterpillar webs, lined with softer materials including animal hair and feathers.
Climate Vulnerability
Conservation Status
Most of breeding range is not subject to human disturbance. Has declined in a few areas after clearcutting of forest.
Climate Threats Facing the Canada Jay
Choose a temperature scenario below to see which threats will affect this species as warming increases. The same climate change-driven threats that put birds at risk will affect other wildlife and people, too.