When a bird understands the value of using a "tool"
While driving through a rice field, a photographer happened to notice a black drongo standing on the back of grazing cattle. Baffled by this strange combination, he took a moment to study this strange pairing and realized that the bird was actually waiting to catch flying insects that the cattle had disturbed while munching on grass.
(All photos by Prof. Wang Aimin, Hainan University)
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