Owl Be Seeing You
It’s time for the #SuperbOwl and #ScienceSunday !
⚮ Did you know that the eyes of an owl are 5% of its body weight? Imagine Peyton Manning with eyes the size of a baseball.. errr…football. Their large pupils dilate at night, harvesting more light to be captured by an abundance of rods, specialized for night vision. Their eyes don’t have as many cone cells as we do, so their color vision is not that great. But they can see up to 100 times better than the Broncos at night!
⚮ How does the owl rotate its head without wringing its neck? An owl has twice as many vertebrae compared to the 7 in humans, giving it a 270 degree flexibility, without tearing the delicate blood vessels in their necks and heads, and cutting off blood supply to their brains.. That’s because unlike human vertebrae, the vertebrae of the owl have large cavities, about ten times the diameter of the vertebral artery that goes through, allowing for plenty of slack. The artery also enters the cervical vertebrae at a higher point, for more freedom of movement. It is heavily networked so that blood supply to the brain and eyes is not interrupted by twisting of the neck even if one route is blocked. Astonishingly, the blood vessels at the neck became wider as they branched, in contrast to that of mere humans, where they get smaller and narrower.
Read More: http://goo.gl/hFUq2 Research by Michael Habib and colleagues at Johns Hopkins University on the mystery of the Owl’s neck. This award winning study was featured in Science magazine and may be the first use of angiography, CT scans and medical illustrations to unravel the mystery of the magnificent owl.
For rare avis who wanted to know about the #SuperbOwl 🙂
Image Source: Northern Hawk Owls https://vimeo.com/17355313