On a shrub-covered dune in San Francisco’s Presidio, biologist Durrell Kapan and a group of volunteers huddle around a tiny plastic condiment container placed delicately amid a cluster of ...

Their analysis revealed that a relatively common butterfly called the silvery blue is a close relative. So the team searched for silvery blues fluttering in habitats similar to the Xerces’ old ...

Cal Academy of Sciences and The Presidio join conservation efforts to bring blue butterflies back to San Francisco coast. Genetic sequencing links Silvery blue butterflies to extinct Xerces blue.

There’s good news tonight for a team in Presidio National Park, working to introduce Silvery Blue butterflies to the ecosystem to act as crucial pollinators. The butterflies are close genetic ...

Eighty years after the Xerces Blue butterfly vanished from San Francisco in 1943, researchers analyzed century-old specimens to find its closest living relative, the Silvery Blue (shown above).

More than 60 hectares (148 acres) of new butterfly habitat have been created in the Midlands in a bid to help rare species. The four-year project at nature reserves in Worcestershire, Shropshire, ...

A similar restoration of silvery blue butterfly is now underway in Presidio Park in San Francisco, he said. Here are Pyle’s three prescriptions for a butterfly-filled future. Can the chemicals.

Silver-studded blue butterflies at one nature reserve have bucked the trend of a terrible summer for the insects, as numbers soared to record highs. The National Trust said populations of the ...