This striking plume of yellow is the fluorescing tail feathers of a male emperor bird-of-paradise (Paradisaea guilielmi). Birds-of-paradise are known for their bright colours and courtship displays.

Birds-of-paradise have captivated the planet with their elaborate plumage and idiosyncratic mating dances. Some species ...

Biofluorescence is seen on an emperor bird-of-paradise (Paradisaea guilielmi) in the American Museum of Natural History's collection. Credit: Rene Martin New research by scientists at the American ...

Birds-of-paradise are even colorful in the dark, with feathers and body parts that glow a brilliant yellow-green under ultraviolet (UV) light, a new study found.