Hobbies And Interests
Butterflies
Butterflies' sensitivity to light helps them search for their food. They see shades of flowers differently, guiding them to the exact location of nectar. Flowers, like the black-eyed Susan, appear yellow to the human eye, but butterflies see more contrasts which lets them see the flower with a dark center, rather than just plain yellow. They also identify each other with special markings on the wings only visible in ultraviolet -- or UV -- light.
Honey Bees
If you were a bee, you'd see spectra of light in a much wider range as well. They see different patterns and colors in other wavelengths, which helps them find sources of nectar in flowers. Like butterflies, the darker center they see acts as a visual guide for them to follow toward the right spot of the flower that contains the most nectar. Bees are able to navigate even on a cloudy days using UV light with the sun as their reference.
Birds
Ultraviolet light reception is a general characteristic of most diurnal birds, which stay active during the day. Birds' complex retina structures enable them to see more colors than humans. UV light aids them in detecting prey; their keen vision lets them see traces of their prey's feces and urine. Birds are "tetrachromats," that can discern potential mates with their perception of the plumage using UV light reception. UV light's role in birds doesn't stop there; they also utilize it for migration purposes.
Jumping Spiders
Jumping spiders' eyes are especially sensitive to ultraviolet light. The spiders are only attracted to potential mates that are able to reflect UV light from their body parts. Spiders communicate their courtship after they see a display of UV light reflected from faces and bodies of another spider of the opposite sex.