If you explore our old-growth forests or the high desert trails long enough, you’ll hear the deep, sonorous hoot of the great horned owl or the whimsical “who cooks for you” hoot of the barred owl.

A hummingbird alerted me. It darted about very erratically rather than the smooth flying while taking nectar from flowers. And it wasn’t darting around flowers but zig-zagging around like a fly over ...

Arizona's pygmy-owl will once more be protected under the Endangered Species Act. The U.S. Fish and Wildlife Service said Wednesday it would list the cactus ferruginous pygmy-owl as a threatened ...

TUCSON, Ariz.— The Center for Biological Diversity filed suit today against the U.S. Fish and Wildlife Service for failing to finalize Endangered Species Act protections for the cactus ferruginous ...