U.S. Fish and Wildlife (USFWS)

The U.S. Fish and Wildlife Service is asking a federal appeals court to reinstate a rule that removed gray wolves from Endangered Species Act protections.

Invasive zebra mussels have arrived in the Colorado River. State wildlife officials said signs of the mussels were found in the river and a canal on the Western Slope. The Colorado Sun reports the invaders pose huge risks to water infrastructure and fish populations.

Six conservation groups have filed a lawsuit challenging a recent U.S. government decision not to protect wolves in northern Rocky Mountain states as an endangered species. The groups argue in the federal lawsuit filed July 2 in Montana that those states are exercising too much leeway to keep the predators' numbers to a minimum.

Colorado’s bald eagle population was hit hard by avian influenza in 2022, reducing the number of nests by about 20 percent. But now, the eagles have made a remarkable recovery.

Nationwide, millions of barriers, like dams, are plugging up rivers and streams. These man-made barriers make it hard for fish to move freely and lay eggs. Now, the federal government is spending more than $200 million to reopen spawning grounds for fish, which includes an effort to recover an endangered species sacred to the Pyramid Lake Paiute Tribe in Nevada.

Just over a year after President Joe Biden signed the Bipartisan Infrastructure Act into law, a flood of money is already being put to work to restore aquatic ecosystems in the Mountain West.

Two different populations of a prairie bird that lives in parts of the Mountain West were listed under the Endangered Species Act by the U.S. Fish and Wildlife Service.

White-nose syndrome is a fungus that develops in the cave-dwellers during winter hibernation. It invades their skin and can be deadly. According to the Fish and Wildlife Service, it’s caused estimated population declines of more than 90% in affected colonies.

The U.S. Fish and Wildlife Service is proposing a regulation change under the Endangered Species Act that would allow some species to be introduced outside their historical ranges. With more flexibility some endangered and threatened species could be moved to other suitable habitats.

U.S. wildlife officials have agreed to craft a new habitat plan for the snow-loving Canada lynx that could include more land in Colorado and other western states where the rare animals would be protected, according to a legal agreement made public Tuesday.