Several North American Bats Can Glow in the Dark (UV light, don't get excited.)
Several North American Bats Can Glow in the Dark (UV light, don't get excited.)
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These North American Bat Species Glow in the Dark
Some bats glow under ultraviolet light, and researchers think they have a good idea of why this might be happening.
According to wildlife biologist Steven Castleberry, one of the study’s authors, the answer might be as simple as a lingering evolutionary vestige. Think of something like the tail bones we humans have as a remnant of when our extremely ancient ancestors had tails.
The glow could be an ancient biological trait that once served a purpose but now hangs around, not really useful to anyone, and acts more like a cool factoid than a valuable trait from back in ancient bat days.