Conservation groups sued the Fish and Wildlife Service for its failure to formalize a protection proposal made under the Biden administration.

The U.S. Fish and Wildlife Service last week agreed to issue a final listing determination for monarch butterflies by June 6, ...

The British swallowtail butterfly (Papilio machaon britannicus) is the U.K.'s only native swallowtail and its largest native butterfly. It's instantly recognizable by its striking light ...

The Black-eyed Satyr, Euptychia attenboroughi, is so rare it is only found in the lowland tropical forests of the upper Amazon basin in Venezuela, Colombia, and Brazil. The Black-eyed Satyr is the ...

The St. Francis Satyrs now number around 1,000 and are found in an area of less than 20 acres. Melissa McGaw Nick Haddad is a tall, quick-to-smile Minnesotan. But lest the easy grin fool you, he is ...

Tours of the grasslands at Fort Indiantown Gap, home to the only population of the rare Regal Fritillary butterfly in the eastern United States, are set for four days in June and July. Guided tours ...

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American The once rare brown argus butterfly is on the ...

Myristica swamps are rare freshwater forests of the Western Ghats. Discover why these tiny, waterlogged ecosystems matter and ...

Chris Johnson was volunteering at the university’s Natural Science exhibit, Butterflies! in October of 2014. Luckily, he was watching when a butterfly, newly emerged from the chrysalis began to open ...

WASHINGTON— In a bittersweet move for conservation groups, the U.S. Fish and Wildlife Service today agreed to issue a final ...