Why Reindeer Eyes Change Color with the Seasons: Reindeer Eye Color Mystery Solved Reindeer, also known as caribou in North America, inhabit some of the coldest and darkest parts of our planet. These remarkable creatures face months of near. Do reindeer's eyes really change color? If so, why, and how does this adaptation actually work in the wild?
Read the original article. Reindeer noses are not the only body part that changes colour. Part of the back of their eye shines a gold-turquoise colour in summer, and deep blue in winter.
The back of the eye behind the retina changes color between summer and winter. It's not visible externally, though, as these pictures claim to show. During the summer, reindeer eyes glow a golden hue, reflecting much of the bright sunlight that bathes the tundra.
But as winter sets in, their eyes turn a deep, mysterious blue. This change isn't just for aesthetics; it's a vital adaptation for survival. Reindeer eyes literally change color with the seasons!
The tapetum is the reason why cat or raccoon eyes look strangely reflective at night. So why does the reindeer tapetum turn blue in winter? The answer probably has to do with maximizing light absorption in the blue and sub-blue range - during the long, dark twilight hours of winter. Why do reindeer's eyes change color with the seasons? In this video, Alex Dainis explains why reindeer eyes change color from orange-gold in the summer to blue in the winter.
This change allows them to UV light in the winter time, which might seem counterintuitive because of their bright, snowy habitat. However, the reindeers' food source is a light colored lichen that absorbs UV. Reindeer change the color of a reflective layer in their eyes between summer and winter to deal with months.
Reindeer, or caribou in North America, have an incredibly unique genetic adaption to help them see better regardless of season or light condition. In the summertime, reindeer can be seen sporting a set of golden eyes, while in winter, they are a striking blue. Rudolph's nose may have been red, but his eyes were blue - except in the summer, when they would have been golden.
That's because reindeer eyes change color depending on the time of year, which helps them see better in different light levels. Their blue eyes are approximately 1,000 times more sensitive to light than their golden counterparts, a crucial adaptation in the dark days of.