A new study has found that overall butterfly populations are declining across the United States. The study, which was ...

A year-round resident of New Mexico's high mountain meadows, the highly imperiled Sacramento Mountains checkerspot butterfly relies wholly on the integrity of its remarkably limited range. This ...

The plight of the Quino checkerspot butterfly has been described by a biologist as “four engines out and about 10 seconds to impact.” The Quino checkerspot was once one of the most common butterflies ...

Butterfly populations across the United States are declining, a trend reflected in the Western monarch butterfly population ...