|Conservation status||May have declined initially with clearing of eastern forest, before it adapted to nesting in cities. Now common, expanding range toward northwest.|
|Family||Crows, Magpies, Jays|
|Habitat||Oak and pine woods, suburban gardens, groves, towns. Breeds in deciduous or mixed woods, avoiding purely coniferous forest. May be in fairly low or scrubby forest in southern part of range. Favors habitat with many oak or beech trees. Often common in well-wooded suburbs or city parks.|
Forages in trees and shrubs and on ground. Comes to feeders for seeds or suet. Pounds on hard nuts or seeds with bill to break them open. Will harvest acorns and store them in holes in ground.
4-5, sometimes 3-7. Greenish or buff, sometimes pale blue, spotted with brown and gray. Incubation is by both parents (but female does more), about 16-18 days. Young: Both parents bring food for nestlings. Young leave nest 17-21 days after hatching.
Both parents bring food for nestlings. Young leave nest 17-21 days after hatching.
Omnivorous. Most of diet is vegetable matter (up to 75% of diet for year, higher percentage in winter), including acorns, beechnuts, and other nuts, many kinds of seeds, grain, berries, small fruits, sometimes cultivated fruits. Eats many insects, especially caterpillars, beetles, grasshoppers, and others; also eats spiders, snails, birds' eggs, sometimes small rodents, frogs, baby birds, carrion, other items.
Courtship may involve aerial chases; male may feed female. Blue Jays become quiet and inconspicuous around the nest, but will attack with loud calls if the nest is threatened by a predator. Nest site is in tree (either coniferous or deciduous), placed in vertical crotch of trunk or at horizontal fork in limb well out from trunk; usually 8-30' above ground, sometimes 5-50' up. Nest (built by both sexes) is a bulky open cup made of twigs, grass, weeds, bark strips, moss, sometimes held together with mud. Nest is lined with rootlets and other fine materials, often decorated with paper, rags, string, or other debris.
Text © Kenn Kaufman, adapted from
Lives of North American Birds
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Present all year in most of range, but variable numbers migrate south in fall; big southward flights in some years, with thousands on the move, although they do not go south of the United States. Migrates by day.
- All Seasons - Common
- All Seasons - Uncommon
- Breeding - Common
- Breeding - Uncommon
- Winter - Common
- Winter - Uncommon
- Migration - Common
- Migration - Uncommon
See a fully interactive migration map for this species on the Bird Migration Explorer.Learn more
Songs and CallsA raucous jay-jay, harsh cries, and a rich variety of other calls. One is almost identical to the scream of the Red-shouldered Hawk and the calls of Broad-winged HawkAlso a musical queedle-queedle.
Learn more about this sound collection.