A recent study combining data from more than 76,000 surveys from 35 monitoring programs across the country found butterfly ...

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 ...

After Hurricane Andrew ripped through South Florida in 1992, the already-scarce Miami blue butterfly almost went extinct: No one recorded a single sighting for years. Finally, in 1999, a cheer went up ...

With no sightings in two years, the rare Ogasawara blue butterfly, named after its island chain natural habitat far south of Tokyo and designated a national natural treasure, is considered extinct ...

The endangered Karner blue butterfly has struggled with habitat loss. U.S. Fish and Wildlife Service Eliza Grames, Binghamton University, State University ...