The leader of the net-toting group is Mark Williams, who has traveled widely, fending off baboons and dodging hippos and snakes, in search of his obsession. ark Williams was out with his butterfly net ...

The Appalachian tiger swallowtail butterfly is a rare breed: Some 100,000 years ago, two different species mated and their hybrid offspring gave rise to the Appalachian species, researchers have found ...

The threatened Oregon silverspot butterfly in its native coastal habitat on Mount Hebo in Oregon. (Michael Durham/Oregon Zoo) PORTLAND (AP) — Conservationists have successfully bred the extremely rare ...

Researchers have created a hybrid butterfly whose genes and color are blends of two other species. New species typically arise from the branching of one species into two, but in Thursday's issue of ...

From finding a place to lay eggs to providing food for growing caterpillars, plants and gardens play an important role in the life of a butterfly. This was one of the themes of the fifth annual ...

Mark Williams was out with his butterfly net in his favorite South African mountain range when a flutter of gray-blue wings sailed by. They were almost as small and nondescript as the other gray-blue ...

PORTLAND, Ore. — Conservationists have successfully bred the extremely rare Oregon silverspot butterfly in captivity, a potential breakthrough for saving a species that once was found in coastal ...