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

For 28 years, the Xerces Society for Invertebrate Conservation has counted monarch overwinter populations along the ...

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

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 ...

Monarch populations east of the Rockies ... “It’s a special thing that’s almost unique among butterflies. It’s part of their story, and if we were to lose that, it would be a great tragedy.” ...

there appears to be a growing consensus that the summer heat waves played a major part. Referring to the monarch butterfly as an "indicator species," she said the ongoing study of this iconic ...

The U.S. Fish and Wildlife Service proposes listing Monarch butterflies as threatened, seeking public input until March 2025.

The number of monarch butterflies dropped by 96% in 2024 ... are the only things they eat in the caterpillar phase. In some parts of Canada and the U.S., more than 90 per cent of it has vanished ...