Monarch butterfly numbers plummet in US west coast winter habitats
Just 9,119 were counted in 2024 – down 96% on previous year and second-lowest mark in nearly three decadesThe 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 the climate crisis take their toll on the beloved pollinator.The butterflies, known for their distinctive orange-and-black wings, are found across North America. Monarchs in the eastern US spend their winters in Mexico, while monarchs west of the Rocky Mountains typically overwinter along the California coast. Continue reading...
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Just 9,119 were counted in 2024 – down 96% on previous year and second-lowest mark in nearly three decades
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 the climate crisis take their toll on the beloved pollinator.
The butterflies, known for their distinctive orange-and-black wings, are found across North America. Monarchs in the eastern US spend their winters in Mexico, while monarchs west of the Rocky Mountains typically overwinter along the California coast. Continue reading...
