Posts Tagged ‘resonance’
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The male club-winged manakin, a rare South American bird, uses specialized wing feathers that resonate as a unit at 1500 Hertz to create the violin-like note close to an F-sharp. This weak resonance cannot be heard without such special adaptations as the enlarged hollow feathers that create the audible tone that attracts females.
CORNELL (US)—Four years ago, a researcher reported a bizarre example of sexual selection in a rare South American bird: The male attracts the female by rubbing specialized wing feathers—more than 100 cycles per second—to create a high hum, similar to a sustained violin note. Continue…
