The Fender's blue butterfly has fluttered away from the brink of extinction. The species, once so rare it was thought to be extinct, is no longer considered endangered, according to a January 11 ...

By Ryan Truscott Francis’s gorgeous sapphire — a new-to-science species of butterfly — has just been described in the ...

Blue butterflies return to San Francisco Presidio, 80 years after Xerces species extinction The California Academy of Sciences used genetic testing to identify a blue butterfly species similar to ...

The new Silvery Blue butterflies in SF's Presidio will replace a long-lost species called the Xerces Blue that went extinct in the 1940s.

Their disappearance has meant the decline of numerous species that previously thrived here. Among the nearly lost is a butterfly with a one-inch wingspan called Fender’s blue.

Wisconsin has 150 species of butterflies. Here's how you can see more of them.

This action is based on the recovery of butterfly populations in Oregon’s Willamette Valley. “The Endangered Species Act has ensured the full recovery of more than 50 species, and the Fender’s blue is ...

ORLANDO, Florida — After six years of searching, an entomologist has concluded that three varieties of butterflies native to south Florida have become extinct, nearly doubling the number of ...

An Oregon butterfly species that was once thought to be extinct has rebounded enough to be removed from the endangered species list.

A male Fender’s blue butterfly has actually expanded its range into Yamhill and Washington counties, giving the species restoration efforts a boost.

For Ottman, the Fender's blue butterfly's recovery may signal hope for other endangered butterfly species, like the iconic monarch butterfly.