“With these endangered species protections, we aren’t just protecting charming little butterflies and their wetland habitat. We’re protecting the water that sustains all life in the ...

The Western population of the monarch butterfly has declined to a near-record low with fewer than 10,000 found living in ...

Once, millions of monarchs wintered in California. But climate change, habitat loss, widespread pesticide use and disease ...

The number of monarch butterflies in California is in sharp decline this year. This is the second-lowest population recording ...

The University of New Mexico's Museum of Southwestern Biology, Natural Heritage New Mexico, and the New Mexico BioPark ...

This winter, volunteers from the Xerces Society, a nonprofit environmental group, tallied just 9,119 western monarchs — a ...

The number of brown hairstreak butterflies on a nature reserve is stable, a wildlife trust says.

The number of monarch butterflies spending the winter in the western United States dropped dramatically this year even as ...

Pismo State Beach this year – The Xerces Society for Invertebrate Conservation, an international nonprofit dedicated to ...

The number of rare butterflies found on a nature reserve ... hairstreak butterfly eggs at Asham Meads in Oxfordshire. The species is found in select areas across the south of Britain and is ...

The society said these numbers underscored the importance of the U.S. Fish and Wildlife Service’s new proposal to list the butterfly as a federally endangered species. Federal wildlife officials ...