The average rooster crow is about 130 dB, about the same volume as standing 15m from a jet taking off. To prevent deafness from their own calls, roosters have evolved soft tissue that covers half of the eardrum while crowing.

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The average rooster crow is about 130 dB, about the same volume as standing 15m from a jet taking off. To prevent deafness from their own calls, roosters have evolved soft tissue that covers half of the eardrum while crowing.