The latest count of western monarch butterfly populations is the third-lowest yet, after 2024 and 2020.

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

The Trump administration has delayed protections.

The Xerces Society has released new results from its annual Western Monarch Count, showing that monarch butterfly numbers remain low at overwintering sites across California, including Pismo Beach.

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

Climate warming reduces nectar quality in flowers, leaving migrating monarch butterflies with less energy to survive winter.

The Endangered Species Act is no help yet.

Pacific Grove is known as ‘Butterfly Town USA’ for its role as an overwintering spot. As the insect’s population plummets, residents are coming to its rescue ...

Mid-season surveys have turned up roughly 8,000 monarchs across the western range, based on figures compiled by count ...

Monarch butterflies and other native pollinators are experiencing steep population declines driven by pesticide and herbicide ...

Scientists say roosting monarchs took up 2.2 acres of Mexican fir forests this winter. That's the second smallest overwintering population on the books. Lawrence – Butterfly enthusiasts in the eastern ...

The anecdotes abound this year — friends reporting magical clusters of monarch butterflies on their walks, dozens of organizations offering free giveaways of native milkweed and projects to restore ...