動画再生

Millions of ladybugs on an Arizona mountain isn’t an invasion, it’s a summer strategy. After feeding on aphids in the hot desert valleys, they fly up to cooler “sky islands” ( usually above 2,100 m / 7,000 ft). There they pile onto rocks and tree trunks in dense orange carpets and enter aestivation (summer dormancy) until temperatures drop. Same summits get used year after year. The clusters help them stay cooler, safer, and ready to mate before heading back downhill in fall. Harmless to people, excellent aphid predators, and one of the Southwest’s most striking insect spectacles. 🎥 hosh_jolland_