A butterfly that went extinct decades ago after the destruction of its Bay Area habitat is now the driving force behind its ...

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.

The Xerces Blue butterfly (Glaucopsyche xerces) was native to the coastal dunes of San Francisco, in the United States. As the city grew, much of the butterfly’s habitat was destroyed and its ...

SAN FRANCISCO (AP) — More than 80 years ago, a beautiful butterfly called Xerces Blue that once fluttered among San Francisco's coastal dunes went extinct as stately homes, museums and parks ate ...

As the first North American insect to go extinct due to humans, a blue butterfly has become an icon for insect conservation -- and what happens when humans destroy habitats without thought for the ...

Pyle, an American, thought of the Xerces blue. “We should make that our symbol for butterfly conservation in the U.S.,” Pyle said.

SAN FRANCISCO — More than 80 years ago, a beautiful butterfly called Xerces Blue that once fluttered among San Francisco's coastal dunes went extinct as stately homes, museums and parks ate up ...

A silvery blue butterfly, the closest relative to the extinct Xerces blue butterfly, is seen under netting after its release in the Presidio's restored dune habitat in San Francisco, Thursday ...

SAN FRANCISCO — More than 80 years ago, a beautiful butterfly called Xerces blue that once fluttered among San Francisco’s coastal dunes went extinct as stately homes, museums and parks ate up ...