The small fish are expected to thrive inside Biosphere 2 and establish a new, local population, according to researchers.

The Center for Biological Diversity has asked the U.S. Fish and Wildlife Service to add the Bendire's thrasher to the endangered species list. The thrasher is a rare desert songbird whose habitat is ...

When it rains, they tuck their heads down to prevent their nostrils from facing upward. Because of their unique facial ...

Rapid development in the Valley is displacing burrowing owls from their native agricultural habitats, leading to a decline in ...

By looking the other way and being beholden to ranchers, our federal land managers at the Forest Service are abdicating their responsibilities and condemning endangered animals to extinction.” Field ...

PHOENIX— Federal land managers have allowed years of extensive damage from livestock grazing to streamside habitats vital for endangered plants and animals in Arizona and New Mexico, according to a ...

A Maricopa County judge ruled yesterday that more than 50 animals seized from a Rio Verde property last month be returned to their owner, Benjamin Alvarez. The decision followed a full day of ...