A rooster grows at about 130 db. That’s as loud as standing 15 meters from a jumbo jet with it’s engines roaring. So how do roosters keep themselves from going deaf after only a few crows?
When a rooster’s beak is fully open, as it is when crowing, a quarter of the ear canal completely closes and soft tissue covers 50% of the eardrum, the team reports in a paper in press at Zoology. This means roosters aren’t capable of hearing their own crows at full strength. The intensity of a rooster’s crow diminishes greatly with distance, so it probably doesn’t cause significant hearing loss in nearby hens. But if it did, she’d likely be OK. Unlike mammals, birds can quickly regenerate hair cells in the inner ear if they become damaged.
Now you know.