A survey of museum specimens reveals that more than a dozen species of the birds sport biofluorescence in feathers, skin or even inside their throats.

Illuminated by blue and UV light, the birds’ white and bright yellow plumage broadcasts colors that may be used in territorial disputes or for finding mates, according to the study.

You'll be amazed by the ways desert birds survive and thrive in dry country. Learn about the bird species that live in ...

Birds-of-paradise can emit green, yellow and pale blue light from their bodies. It’s believed this ability – known as biofluorescence – helps the birds to stand out or hide in their tropical forest ...

"It’s dangerous for human beings to vaccinate the birds," the health secretary said John Parra/Getty; Getty Robert F. Kennedy Jr. addressed the worsening avian flu crisis, saying vaccinating ...

PPMV in birds can range from minor and brief illness to fatal infections, according to the lab. Symptoms include "weight loss, sneezing, nasal discharge, labored breathing, yellow-green diarrhea ...

A rare yellow grosbeak, native to Mexico, drew birders nationwide to a Berryville Ranch. Shianne Hunnicutt said the yellow bird has been visiting her feeder.

“Cats were already known to be susceptible to the H5N1 virus, with several feline cases linked to poultry or wild bird exposure before the cattle outbreak began.” Felines, domestic and ...

A telltale sign you’re getting sick is excess mucus, and if you’ve ever been desperate to stop coughing and sneezing, you’ve likely examined your mucus color, from yellow to green ...

Researchers have been eavesdropping on an unusual family of crows in Spain, collecting data on hundreds of thousands of different sounds the birds made. Small microphones recorded a variety of ...

A Jan. 30 Facebook post (direct link, archive link) makes a series of claims about bird flu. "Remember they are not killing the ducks, seagulls, eagles and quail," reads text in the post.

A woman in Wyoming and a farm worker in Ohio marked the latest Americans hospitalized with bird flu, as the virus continues to disrupt the poultry and cattle industries. Since the summer ...