UC Davis professor Hugh Safford found the highest living tree in California on a recent hike through the High Sierra.

While bird flu is rare, the Centers for Disease Control and ... not dairy cattle. On Wednesday, California Gov. Gavin Newsom declared a state of emergency after more than 300 herds tested positive ...

For the third time in four years, large numbers of pelicans are requiring rescue as they show clear signs of starvation.

It’s a classic birding bummer — sometimes a rare bird comes to light too late for birders to see it, to the chagrin of those ...

Here are some rare birds you may never get a chance to see again in the wild. With a wingspan of nearly 10 feet, the California Condor is North America’s largest land bird. Only a few hundred ...