Sometimes. When food becomes scarce, bats will migrate, hibernate, or both. What they do depends less on the species and more on the place where the bats live. Most bat colonies in temperate areas start migrating in July, once their young are flying. Migrating bats travel an average of 322km (200 miles) south. Brazilian free-tailed bats travel up to 1,300 km (800 miles) to their winter roosts in Mexico.
In general, bats that roost in trees are more likely to migrate because trees provide less shelter than caves do.
Due to insects not being available in the winter, temperate-zone bats survive by migrating to warmer regions or by hibernating. Millions of Brazilian free-tailed bats can migrate up to 1,300km.
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