"If you’ve spent any time around roosters, you know that their “morning” crowing can be… loud. That distinctive cock-a-doodle-doo is piercing: if you happen to be standing near a rooster sounding off, you’re hit with a sound wave that’s about 100 decibels. That’s unpleasantly loud, like the whir of chainsaw. If one cock-a-doodled right in your ear, the sound is even louder—over 140 decibels.
Sounds that loud can cause damage in less than a second, and are just shy of shattering your eardrum.
In fact, roosters are so loud that it’s surprising they aren’t deaf from their own calls. So Belgian researchers looked into it, and found that they have special ears which allow them to crow to their hearts’ content without losing their hearing.
They strapped microphones to three rooster heads, placing the business ends right at the animals’ ear openings, to measure the sound levels the animals experience when they crow. They also measured the crowing from different distances away. They then made micro-CT scans of hen and rooster ears to reconstruct the geometry of their ear canals when their beaks are open and closed.
The rooster crows they measured were more than loud enough to be potentially damaging—often over 100 decibels, and one animal in particular crowed at over 140 decibels. When the researchers looked at their ears, they saw how the animals are able to be so loud without going deaf: their ears are blocked when they crow. When the animals opened their beaks fully, their external auditory canals completely closed off. So basically, roosters have built in earplugs." Discover
And God created ...every winged fowl after his kind: and God saw that it was good.
Genesis 1:21
In fact, roosters are so loud that it’s surprising they aren’t deaf from their own calls. So Belgian researchers looked into it, and found that they have special ears which allow them to crow to their hearts’ content without losing their hearing.
They strapped microphones to three rooster heads, placing the business ends right at the animals’ ear openings, to measure the sound levels the animals experience when they crow. They also measured the crowing from different distances away. They then made micro-CT scans of hen and rooster ears to reconstruct the geometry of their ear canals when their beaks are open and closed.
The rooster crows they measured were more than loud enough to be potentially damaging—often over 100 decibels, and one animal in particular crowed at over 140 decibels. When the researchers looked at their ears, they saw how the animals are able to be so loud without going deaf: their ears are blocked when they crow. When the animals opened their beaks fully, their external auditory canals completely closed off. So basically, roosters have built in earplugs." Discover
And God created ...every winged fowl after his kind: and God saw that it was good.
Genesis 1:21
