djpt448.64Roger has built-in earplugs.
Considering a rooster's call can reach 140 decibels or louder, it might leave one to wonder how the rooster itself keeps from going deaf when that noise is coming right out of its beak. It turns out, the farm fowl have built-in earplugs. Researchers found that when a rooster opens its beak to crow, its external auditory canals close off, preventing sound from coming in and doing any damage.
