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

This winter, volunteers from the Xerces Society, a nonprofit environmental group, tallied just 9,119 western monarchs — a ...

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

What is the status of the monarch butterfly in the U.S. and is it listed as threatened or endangered? -- M. Smith, Raleigh, ...

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

A pilot program established in 2021 to help pollinators in Utah has enjoyed success and is helping residents, communities and ...

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

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 monarch butterfly was first petitioned to be listed ... University of Nevada-Reno found that milkweed leaves, the main food source for the monarch caterpillar, were contaminated by 64 pesticides.

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

A butterfly sits on a leaf at Monarch Grove Sanctuary in Pacific Grove ... among the public and for their critical role in the food web, said Emma Pelton, a biologist at the Xerces Society.