An American Crow (Corvus brachyrhynchos) dives to attack a Bald Eagle (Haliaeetus leucocephalus) perched at the top of a tree in Kirkland, Washington. Crows are often seen chasing hawks or eagles in flight, or repeatedly diving at them when they perched, a practice known as mobbing. Research is inconclusive, but scientists think this harassment helps to force the birds of prey to hunt elsewhere, ultimately reducing the threat to the crows and lowering competition for food.
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