A recent study published in Nature Ecology & Evolution has issued an urgent warning. New findings point to rapid extinction ...

Arizona is a hummingbird hotspot. People travel far and wide to see these tiny lustrous birds. There are at least a dozen species of hummingbirds in Arizona, the greatest variety of any state. You ...

Typically, by this time of year, migration is over. Bird species that were moving north in the spring have reached their ...

Arizona’s desert birds are in decline, according to a national conservation report tracking long-term bird populations, prompting one conservation group to ask the federal government to take ...

All confirmed avian flu infections in the species have been found in northern Arizona, according to the U.S. Fish and Wildlife Service. The agency said 21 condors have died.

These birds represent two sides of a dramatic northward movement for many bird species nationally over four decades due to climate change, according to a recent National Audubon Society study.

In birds, species that have high reproductive rates and invest heavily in raising offspring have less energy available for DNA repair, making them more susceptible to cancer.

At least three California condors in northern Arizona have died since last month from bird flu, which could spread and pose yet another threat to the endangered species, the National Park Service ...