This common, large songbird is familiar to many people, with its perky crest; blue, white, and black plumage; and noisy calls. Blue jays (Cyanocitta cristata) are known for their intelligence and complex social systems with tight family bonds. Their fondness for acorns is credited with helping spread oak trees after the last glacial period. Related to crows, it shares the crows' habit of raiding bird nests for eggs and young.
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