US wildlife researchers have discovered that two California condors, a critically endangered bird, gave birth without any male genetic DNA. The discovery that condors are capable of virgin births ...

"With critically endangered species, including California condors, this is common practice to ensure the safety of the egg," the wildlife alliance said. Over the next couple of weeks, wildlife ...

At first glance, a valley dragon doesn’t seem to have much in common with a grizzly bear or a condor. Though it has a ...

Endangered California condors are part of a recovery programme that aims to release them into the wild. Zoos in the state work closely with the US Fish and Wildlife Service as part of the ...

A cherished icon of the West, the prehistoric-looking California condor remains one of the world's most endangered species. North America's largest avian narrowly escaped extinction in the mid-1980s ...

A group of endangered California condors in far northern California faced a lead poisoning scare this month, with one bird being sent for special treatment. The reintroduction program run by the ...

In their continuing efforts to protect California condors from avian influenza ... researchers now have begun vaccinating the endangered raptors. Last week, three birds received the vaccine.

North America's largest bird has not had an easy go of it, and after a century of absence, a pair of critically endangered birds has made the Pinnacles National Monument ... The Pinnacles National ...

Monarch butterflies, known for migrating thousands of miles (km) across North America, have experienced a decades-long U.S.