The all-time lowest population size in Pismo Beach was reported in 2020, when only 199 butterflies were counted at the ...

A monarch butterfly enjoys the flowers at the Tom Ridge and Julian Wetlands in this file photo. Cooler temperatures and shorter days; goldenrods and asters blooming by the roadside. These are all ...

U.S. wildlife officials announced a decision in December to extend federal protections to monarch butterflies after years of warnings from environmentalists that populations are shrinking and the ...

In a turn of events, the eastern monarch butterfly population — which was put on the list of endangered species just a few years ago — nearly doubled this year, according to a March report from the ...

Western Monarch Day exists because one of North America’s most visible migrations nearly vanished without ever making ...

Monarch butterflies are migrating north and have been spotted in states near Michigan. Although their wintering population doubled this year, monarchs have experienced a significant overall decline ...

The most unsettling declines aren't sudden collapses but slow thinnings that force us to realize, too late, that ...

MADISON, Wis. (AP) - 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 U.S. Fish and Wildlife Service proposed Tuesday adding the iconic monarch butterfly to its list of federally endangered species. Public comments will be accepted through mid-March on the proposal ...

I struggled to catch my breath, but it had nothing to do with the 10,000-foot altitude. All around me, millions of monarch butterflies swirled around, and it felt like I was inside an ecological ...

NORFOLK — A few weeks ago at The Hague School, environmental biology and chemistry teacher Karen Spencer, along with a crew of parents, planted beds of milkweed, which is the sole host plant for ...

Before National Geographic published its famous August 1976 cover story detailing the search for the monarch butterfly’s wintering grounds, nobody knew where these strikingly beautiful creatures ...