PHOENIX — Two environmental groups filed a lawsuit Tuesday aimed at forcing the federal government to protect Arizona’s diminishing cactus ferruginous pygmy owl population under the Endangered Species ...

After a federal judge upheld removal of the pygmy owl from the endangered species list, environmentalists are now asking the U.S. government to classify the bird as endangered in both Arizona and ...

Cactus ferruginous pygmy owls are named for the saguaro cactuses they live in, their rusty-colored stripes, and their small size. They’re as fierce as they are small: These 2.5-ounce raptors prey on ...

A coalition of environmental groups says it will sue the federal government to restore the pygmy owl's endangered status unless the government decides within a week to do that on its own. The notice ...

Since the federal government listed the cactus ferruginous pygmy owl as endangered in 1997, it has been a point of conflict between developers and slow-growth advocates in Tucson (HCN, 8/30/99: A ...

The Angeles National Forest is home to approximately 3,000 different species of plants and animals that can be found in Eaton Canyon. Many of these species are exclusive to this area, or are rare or ...