With so much H5N1 circulating in the U.S., scientists worry we are a few mutations away from a potential human pandemic.

Bird flu has led to a wide variety of symptoms during recent outbreaks, including common flu symptoms like cough and vomiting. Many have also had conjunctivitis or pink eye as their only symptom, ...

Birds have fascinated humans for centuries ... but they pale in comparison to some prehistoric giants. Enter Argentavis magnificens, a prehistoric relative of the Andean condor that ruled the ...

Nevada confirms its first human case of bird flu amid a growing U.S. outbreak impacting poultry, wildlife and the price of ...

A new CDC report shows an outbreak of bird flu among U.S. dairy and poultry workers, renewing concerns among dogwalkers and hikers in Massachusetts about how safe it is to be outdoors.