Long-ignored, high-flying arthropods could make up largest land migrations
Each year, 3.5 trillion aphids, moths, flies and their kin fly over southern United Kingdom

OVERLOOKED OVERHEAD Adding up ladybugs (seven-spotted species shown) and other high-flying insects and their kin that travel overhead each year reveals what could be the biggest migration of land animals on the planet.
Leviathan1983/wikimedia commons (CC BY-SA 3.0)
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