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 ...

These big, yellow butterflies are common in the eastern United ... Female Eastern swallowtails tend to have more blue on the hindwings than the males. A dark form looks similar to a pipevine ...

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 Sophia M. Sachs Butterfly House at Faust Park is back open after being closed during January for annual maintenance. The Butterfly House is as beautiful as ever, with 1,500 blue morpho ...

The large blue butterfly has a strange life. After munching on wild thyme flowers for a few days, it drops to the ground and persuades a particular species of red ant to carry it into a nest.