To President Donald Trump, it’s a hotbed of “waste, fraud and abuse” whose only purpose is to “destroy people” and whose staff amounts to a ...

Another spillover of the H5N1 bird flu virus from wild birds to dairy cattle appears to have occurred, this time in Arizona.

Wisdom, a 74-year-old Laysan albatross, is the world's oldest known wild bird. She also just became a mother yet again.

A bat sampled by biologists at Fort Huachuca near Sierra Vista in 2024 tested positive for the fungus that causes white-nose syndrome disease in bats.

Avian influenza has been detected in milk from a dairy herd in Maricopa County, according to the Arizona Department of Agriculture.

A fungus that has killed millions of bats across North America has arrived in Arizona, state wildlife officials announced on ...

Calliope Hummingbird Identification and Size Measuring a mere 3 inches long and weighing one-tenth of an ounce, roughly the ...

Scientists have long suspected that Mexican long-nosed bats migrate through southeastern Arizona, but without capturing and ...