Once thriving, there are now believed to be just 73 Southern Resident killer whales left in Washington state's Puget Sound.

They were kind of on a vacation, getting fed twice a day, with no stress of predators,” a university researcher said.

A tiny Tennessee fish called the Barrens darter has now wiggled closer to securing protections under the Endangered Species ...

Climate change jeopardizes endangered species’ habitats. Potentially jeopardizing them further is a federal proposal around ...

In a landmark collaboration between science and education, six Hawaiʻi high school students have successfully produced the ...

By Michelle Trauring On the surface, the northern long-eared bat, the Atlantic sturgeon and the rufa red knot do not have ...

Ellen Spiegel discusses her story about how federal changes to the endangered species program will affect CT animals.

The palila once existed throughout the entire island chain. Now the species can only be found on a small region of Mauna Kea ...

Over 500 bird species could vanish in 100 years. Protecting habitats isn't enough. Targeted recovery efforts are crucial.

After an illness led to a stretch of separation that in turn caused his mother to reject him, a rare Asian wild horse is said to be thriving again at the Minnesota Zoo thanks to a new foster mother.