Long-eared owls shine under UV: A dazzling discovery from US scientists
Scientists from American universities have discovered that the feathers of the long-eared owl glow in the dark! However, to see this effect, you need to use ultraviolet light.
The long-eared owl, also known as the typical long-eared owl, is one of the most commonly encountered owl species. It's pretty easy to recognize. As reported by the G.pl website, it is distinguished by its orange eyes and protruding "ear tufts." Its plumage is usually reddish-brown, although some individuals are grey. This owl is found not only in Europe but also in Asia, Africa, and North America.
Although it may seem that researchers know a lot about long-eared owls, they still hold some secrets. The latest research conducted by scientists from Drexel University and Northern Michigan University has revealed that long-eared owl feathers contain fluorescent pigments! This extraordinary trait is fascinating for the human eye.
The pigments glow under ultraviolet light, a discovery made during 2020 bird banding. The fascinating research results were published in "The Wilson Journal of Ornithology."
An American research team led by Dr. Emily Griffith scanned the bird's plumage with a special device, which showed clear bioluminescence. It was particularly visible from beneath the wings, reports the G.pl website.
It was also discovered that female long-eared owls have a higher concentration of the glowing pigment. "This trait does not strictly depend on gender. The amount of pigment relates to size, age, and gender," explained Dr. Emily Griffith.
Why do they glow in the dark?
Scientists suggest that the glowing pigments in long-eared owl feathers might reflect infrared radiation, helping to insulate heat better.
Research on bioluminescence in birds is still in its early stages, but it already provides fascinating insights into how these animals adapt to their environment.
