Butterflies crossing oceans, moths navigating by the stars: unravelling the mysteries of insect migrations | Insects
On a cloudless sunny day in October 1950, ornithologists Elizabeth and David Lack stood on a mountain pass in the Pyrenees and observed a once-in-a-lifetime spectacle – clouds of migrating insects. The Puerto de Bujaruelo pass in 2021 Up to 500 butterflies were fluttering past them every hour through the 2,200m-high Puerto de Bujaruelo mountain…
