Look up #12

Look up #12

[LabofOrnithology]

Birds can use their feathers for much more than flight. In some species, for example, they produce sound. The secondary wing feathers of the male Club-Winged Manakin, a bird from South America, are large and rigid. He strikes them together at about 107 times per second to create a buzzing sound, which is used during courtship displays.

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