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500,000 Bats Prepare for Migration: A Spectacle in Round Rock

9/17/2025

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Summary

Story summary

As September ends, Mexican free-tailed bats at McNeil Bridge in Round Rock prepare for their migration to Mexico.
Over 500,000 bats reside under the bridge, emerging nightly between 7:30 and 8 p.m. to forage up to 60 miles.
Each bat consumes about half its body weight in insects, benefiting agriculture and health with over $23 billion annually.
The bats face vulnerability due to slow reproduction, with only one pup produced each year.
Locals can observe their flights until early October, with a bat presentation at Round Rock Public Library on October 18.

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Story summary

As September ends, Mexican free-tailed bats at McNeil Bridge in Round Rock prepare for their migration to Mexico.
Over 500,000 bats reside under the bridge, emerging nightly between 7:30 and 8 p.m. to forage up to 60 miles.
Each bat consumes about half its body weight in insects, benefiting agriculture and health with over $23 billion annually.
The bats face vulnerability due to slow reproduction, with only one pup produced each year.
Locals can observe their flights until early October, with a bat presentation at Round Rock Public Library on October 18.