Flying insects tell tales of long-distance migrations
Well-timed travel ensures food and breeding opportunities
MASS MIGRATIONS This hawk moth (Hyles gallii) is one of millions of insects that migrate through a Swiss Alpine pass each year. Trillions of insects fly vast distances with the seasons to eat and breed. They may teach us something about how insects and other animals move around the planet.
Will hawkes, @Hawkes_Will
Every autumn, a quiet mountain pass in the Swiss Alps turns into an insect superhighway.