In 1997 there were more than 1.2 million monarch butterflies wintering along the California coast. Pelton said the silver lining was that the population didn't shrink any further.

The monarch butterfly population in the region had declined 99.9% from three decades ago; only about 1,900 were found in a survey over the 2020 Thanksgiving holiday along the California coast by ...

As millions of monarch butterflies make their way down the east coast to Mexico for the winter, butterfly scientists want people in their flight path to report monarch sightings. Doing so can help ...

Monarch butterfly populations are endangered, to the point that the 1.2 million Western monarchs counted in 1997 plummeted to fewer than 2,000 by 2020. Here are ways we can help them survive.

MADISON, Wis. — U.S. wildlife officials announced a decision Tuesday to extend federal protections to monarch butterflies after years of warnings from environmentalists that populations are ...

The iconic migratory monarch butterfly has had a rough past couple decades. While its numbers can vary year to year, populations east and west of the Rockies have seen an overall long-term decline ...

FILE - Monarch butterflies from Canada stop to rest in Wendy Park on their way to Mexico, Sept. 12, 2023, in Cleveland. (AP Photo/Sue Ogrocki, File) ...

The Monarch Butterfly Festival, a two-day immersive and transportive sensory experience, will be presented by Immigrant Solidarity DuPage from 2 to 11 p.m. Friday and Saturday, Aug. 2-3, at Camera ...

The seasons are subtly changing, and this year’s mightiest monarchs are on the move. The annual fall migration of monarch butterflies is about to be underway, when scores of the iconic black-and ...

2 murders linked to Mexico's famed monarch butterfly sanctuary. The slain conservationists worked for the Monarch Butterfly Biosphere Reserve.

FILE - Monarch butterflies from Canada stop to rest in Wendy Park on their way to Mexico, Sept. 12, 2023, in Cleveland. (AP Photo/Sue Ogrocki, File) ...