Like organic fluids under UV? Except under normal light.
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Butterflies are thought to have the widest visual range of any animal. Butterflies can use ultraviolet markings to find healthier mates.
Ultraviolet patterns also help certain species of butterflies appear similar to predators, while differentiating themselves to potential mates.
Reindeer rely on ultraviolet light to spot lichens that they eat. They can also easily spot the UV-absorbent urine of predators among the UV-reflective snow.
One bird species was found to feed its young based on how much UV the chicks reflected.
Some species of birds use UV markings to tell males and females apart.
The flower Black-eyed Susans have petals that appear yellow to humans, but UV markings give them a bull's eye-like design that attracts bees.
Sockeye salmon may use their ultraviolet perception to see food.
Scorpions glow under ultraviolet light, but scientists do not know why.
Ultraviolet patterns also help certain species of butterflies appear similar to predators, while differentiating themselves to potential mates.
Reindeer rely on ultraviolet light to spot lichens that they eat. They can also easily spot the UV-absorbent urine of predators among the UV-reflective snow.
One bird species was found to feed its young based on how much UV the chicks reflected.
Some species of birds use UV markings to tell males and females apart.
The flower Black-eyed Susans have petals that appear yellow to humans, but UV markings give them a bull's eye-like design that attracts bees.
Sockeye salmon may use their ultraviolet perception to see food.
Scorpions glow under ultraviolet light, but scientists do not know why.
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Some insects, especially bees, can see patterns on flowers that we cannot see except under UV.
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Yes. Sparrow hawks can see urine stains left by field mice. The stains reflect uv rays from the sun. The stains are invisible to humans.