The karner blue butterfly is a federally endangered butterfly ... it might be an indication that spring has arrived. Males are white with orange tips in their upper wings, while females lack ...

In between the ponderosa pine and white fir trees on the Spring Mountains of Southern Nevada lives an endemic blue butterfly. Due to population decline and habitat loss, the Mount Charleston blue ...

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.

A large bright white butterfly with black tips on its ... allotments and fields where they breed. A small bright blue butterfly with black spots on the underside of its wings.