The author writes, “The number of monarch butterflies spending the winter in the western US has dropped to its second-lowest ...

The number of monarch butterflies spending the winter in the western United States has dropped to its second-lowest mark in ...

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

More than 500 people braved the cold with their monarch butterfly signs — symbols of immigration, freedom, and movement — to ...

Monarch butterflies in the western U.S. have dropped to just 9,119 this year. In 2023, the count was 233,394, meaning a 96% decline.