The number of monarch butterflies spending winter in the western U.S. dropped dramatically this year, despite moves to extend ...

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

Are monarch butterflies endangered? Monarch population numbers are falling and it's clear that these butterflies need our ...

In 2023, more than 16,000 butterflies were counted at one local grove. The most recent count was a tiny fraction of that.

The natural phenomenon of the iconic monarch butterflies migrating south for the winter is a fascinating one - and it's one ...

A winter count of visiting monarch butterflies found a steep drop from previous years, which has scientists worried about the ...

Just over 9,000 monarchs were counted in California last winter, the second lowest ever since the annual count began in 1997 ...

The findings challenge previous assumptions about butterfly migration and highlight the role of phenotypic plasticity.

Explore the worrying decline of Monarch butterflies in Texas and the implications for pollination and food production. Learn why preserving these butterflies is vital for a sustainable ecosystem.

A 2,000-mile migration was thought to be a “foolish ... the USFWS issued a December 2024 proposal to list the monarch butterfly as a threatened species under the Endangered Species Act.

The western monarch migration occurs over multiple generations ... the U.S. Fish and Wildlife Service proposed to list the monarch butterfly as a threatened species under the U.S. Endangered ...

Fewer-than-usual monarch butterflies migrated through ... Pismo Beach’s butterfly count matches migration data from the rest of the West Coast. Only 9,119 butterflies were counted at West ...