The iconic monarch butterfly is declining across North America. You can help make a difference by providing the species with ...

Growing milkweed from seed is one of the easiest ways to help declining monarch butterflies. In December 2024, the U.S. Fish ...

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

Newly released data shows that the number of monarch butterflies migrating to California this winter is near-record low. "We ...

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

The U.S. Fish and Wildlife Service is taking steps to list monarch butterflies as threatened species and designate seven ...

Monarchs across the continent face mounting threats, chief among them vanishing milkweed, the host plant for the insects’ ...

The Western population of the monarch butterfly has declined to a near-record low with fewer than 10,000 found living in ...

Scientists are grappling with a stark population decline of the western monarch butterfly after the species’ numbers hit a ...

Outside of the weather, habitat loss and a decline in milkweed and nectar plants has reduced the butterfly population, Howard said. Meanwhile, pesticides dealt a blow to butterflies, too.