Stress may explain vocal mimicry in Bowerbirds

(PhysOrg.com) -- Spotted Bowerbirds (Ptilonorhynchus maculatus) are best known for their nests, but these birds are also capable of mimicking the vocalizations of many different species of birds. It was believed bowerbirds were mimicking the sounds of predatory birds as a way of defense, but a new study in Naturwissenschaften determined that is not the case, but rather that stress and stressful situations account for the vocalizations they choose to mimic.

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