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 habitat and climate ...

The Western population of the monarch butterfly has declined to a near-record low with fewer than 10,000 found living in California this winter, a foreboding sign for the future of the beloved ...

Fewer-than-usual monarch butterflies migrated through San Luis Obispo County this winter, according to data from the conservation-focused nonprofit the Xerces Society. “It feels like a punch to ...

The migration of Monarch Butterflies is an incredible natural phenomenon. We’re all familiar with the stunning beauty of the fragile monarch butterfly, its bright orange wings, and intricate black ...

Copyright 2025 The Associated Press. All Rights Reserved. A butterfly sits on a leaf at Monarch Grove Sanctuary in Pacific Grove, Calif., on Nov. 10, 2021. (AP Photo ...

SAN FRANCISCO (KRON) — Overwintering populations of monarch butterflies in California have reached a near all-time low since records began, conservationists announced on Thursday. The Western ...

The number of monarch butterflies spending the winter in the western United States dropped dramatically this year even as federal officials move to extend protections for the beloved pollinator ...

Fewer monarch butterflies have spent winter in the western U.S. as factors like pesticides, a disappearing habitat, and climate change have affected the population. The population is now at a 30-year ...