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Image of the Day: Hoo’s That?

Lar gibbons (Hylobates lar) produce different soft “hoo” calls to greet neighbors, sing duets with their mates, and warn each other about various predators.

The Scientist Staff

ESTHER CLARKE

(See “Context-specific close-range ‘hoo’ calls in wild gibbons (Hylobates lar),” BMC Evolutionary Biology, 2015.)

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