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 ...
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.
Just over 9,000 monarchs were counted in California last winter, the second lowest ever since the annual count began in 1997 ...