The number of monarch butterflies spending the winter in the western United States dropped dramatically this year even as federal officials move to extend protections for the beloved pollinator ...

The number of monarch butterflies spending the winter in the western United States has dropped to its second-lowest mark in nearly three decades as pesticides, diminishing habitat and climate ...

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

For the past three years, more than 200,000 western monarch butterflies spent their winters along the California coast — huddling together in tall tree groves, finding respite from the wind from ...

The number of monarch butterflies spending the winter in the western United States has dropped to its second-lowest mark in nearly three decades as pesticides, diminishing habitat and climate ...

After bottoming out at 1,901 butterflies in 2020, the population rebounded to 247,246 insects the following year, an increase of nearly 13,000%. The year after that the survey recorded 335,479 ...