Monarch butterflies increasingly plagued by parasites

Monarch butterflies, among the most iconic insects in North America, are increasingly plagued by a debilitating parasite, a new analysis shows. The Journal of Animal Ecology published the findings by scientists at Emory University ...

Western monarchs rebound but still below historic population

The number of Western monarch butterflies overwintering in California rebounded to more than 247,000 a year after fewer than 2,000 appeared, but the tally remained far below the millions that were seen in the 1980s, leaders ...

Sun compass on demand

Monarch butterflies are famous for their annual long-distance migration, which takes them over several thousand kilometers from the north of the USA to their overwintering habitat in central Mexico. On their migration, the ...

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