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News for nerds

Monarch butterflies, fluttering in their millions on 3,000-mile journeys, as luminous as stained glass. Seeing them mass migrate is one of the world’s great spectacles. But what about hearing them?

Phil Torres of the YouTube channel The Jungle Diaries has recorded the sounds of millions of endangered monarchs as they warm up, then flap their bright wings along branches and on leaves and up tree trunks in the Mexican rainforest.