We observed an adult Gray Jay (Perisoreus canadensis) that had captured an adult Black-capped Chickadee (Poecile atricapillus) in Algonquin Provincial Park, Ontario, Canada, during winter. Aerial pursuit of small, adult birds and an instance of capture and predation of a juvenile bird by a Gray Jay have been reported previously. Here, we present the first documented case of capture of a seemingly uninjured, adult bird.
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