Winter migration of monarch butterflies to Mexico drops after one-year recovery

The number of monarch butterflies wintering in Mexico dropped by 27% this year, reversing last year’s recovery from historically low numbers, according to a study by government and independent experts released Thursday. The experts say the decline could be due to late winter storms last year that blew down more than 100 acres (40 hectares) […]

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‘Canary in the cornfield’: Monarch butterfly may get threatened species status

Monarch butterflies were once a common sight throughout the North American heartland. In Mexico, where they overwinter, single trees would often be covered in thousands. But declines in milkweed – their caterpillars’ only source of food – have led to a 90 percent decline in monarch numbers. Now, the U.S. Fish and Wildlife Service (USFWS) […]

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Migrating Monarch Butterflies in “Grave Danger,” Hit New Low

Migrating monarch butterflies are in “grave danger,” according to a report that shows their colonies in Mexico now occupy the smallest area since records began in 1993. The report is based on a survey of Mexico’s Monarch Butterfly Biosphere Reserve done in December 2013. The butterflies, which spend the winter hibernating in the reserve’s forest, […]

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Losing our monarchs: iconic monarch butterfly down to lowest numbers in 20 years

In the next few months, the beating of fragile fiery orange and black wings will transport the monarch butterfly south. But the number of monarch butterflies (Danaus plexippus) reaching their final destination has steadily declined, dropping to its lowest level in two decades last winter, according to a recent survey. The insect’s journey begins in […]

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