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Bat Colony Arrives in Austin
Over a million female free-tailed bats migrate from Mexico to Austin, Texas each spring. Starting in mid-March, the colony arrives and gives birth under the Congress Avenue bridge. Each evening, over a million bats fly out from under the bridge to hunt for food. The Congress Avenue Bridge has the largest urban bat colony in North America, and has become an international tourist attraction.

Hummingbird and Distribution MapPhoto: Wikipedia