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 ...

Haiyong Cai (China) notices the shimmery blue colours of eros blue butterflies basking among the vegetation. While wandering through an alpine meadow, Haiyong spotted a patch of blue among the grass.

More than eight decades ago, a mesmerizing butterfly with iridescent cobalt wings and stunning spots called the Xerces blue vanished from San Francisco. When it disappeared, the Xerces became ...

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 ...