The Xerces blue butterfly went extinct along the San Francisco coast some 80 years ago. But scientists have identified a ...

Here is the list of most breathtaking and beautiful butterfly species in the world. The black swallowtail, also known as the eastern black swallowtail or American swallowtail, has black wings ...

The Smith's blue butterfly may be tiny, but it's endangered in a big way. It spends its whole life within a few hundred yards of two native plants, seacliff buckwheat and coast buckwheat — and is ...

The rare Mount Charleston blue butterfly lives in just a handful of alpine meadows on Mount Charleston above Las Vegas. The species was protected under the Endangered Species Act in 2013. One of its ...