A Monarch butterfly lands on a plant at West End Nursery in San Rafael on Tuesday, Aug. 30, 2022. Marin County is banning local nurseries from selling tropical milkweed in order to protect the ...

The monarch butterfly was classified as an endangered species by international conservations, Thursday. The number Western monarch has plummeted by about 99.9%.

WASHINGTON (AP) — The monarch butterfly fluttered a step closer to extinction Thursday, as scientists put the iconic orange-and-black insect on the endangered list because of its fast dwindling ...

In Marin, only 141 monarch butterflies were observed in the winter of 2020-2021, down from a record 38,700 counted in 2015. The count for 2021-2022 saw a minor improvement with 180 butterflies.

Monarch butterfly enthusiasts and experts in Canada say possible increased protections for the species in the United States are important. The U.S. Fish and Wildlife Service proposed Tuesday that ...