How hummingbirds hum

ScienceDaily
Mar 16, 2021, 8:37 am161 pts
The hummingbird is named after its pleasant humming sound. But only now has it become clear how the wing generates this sound. Researchers observed hummingbirds using 12 high-speed cameras, 6 pressure plates and 2176 microphones. The soft and complex feathered wings generate sound in a fashion similar to how…

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