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

Copyright 2025 The Associated Press. All Rights Reserved. A butterfly sits on a leaf at Monarch Grove Sanctuary in Pacific ...

I really want to spread the word that we should not give up right now,” said Isis Howard, a conservation biologist with the Xerces Society.

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

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.

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.

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

MADISON, Wis. — The number of monarch butterflies spending the winter in the western United States has dropped to its second-lowest mark in nearly three decades as pesticides, diminishing ...

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 ...

For the past three years, more than 200,000 western monarch butterflies spent their ... since the count first began in 1997. While the butterfly’s population has been declining for years ...