{"data":{"site":{"siteMetadata":{"title":"awst.in","author":"EB"}},"markdownRemark":{"id":"2b5b8f87-b143-5574-ace5-6c12a8fc6ec3","excerpt":"Congress Avenue Bridge Bats Address:  Congress Avenue Bridge, Austin, TX 78704 Hours:  Emergence at dusk (roughly 30 min before sunset…","html":"<h1>Congress Avenue Bridge Bats</h1>\n<p><strong>Address:</strong> Congress Avenue Bridge, Austin, TX 78704<br>\n<strong>Hours:</strong> Emergence at dusk (roughly 30 min before sunset), March–November<br>\n<strong>Cost:</strong> Free  </p>\n<h2>The Hook</h2>\n<p>Under the Congress Avenue Bridge lives the largest urban bat colony in North America — 1.5 million Mexican free-tailed bats that eat 10,000–30,000 pounds of insects every single night.</p>\n<h2>Key Facts</h2>\n<ul>\n<li>1.5 million Mexican free-tailed bats (Tadarida brasiliensis)</li>\n<li>Colony moved in after the bridge was reconstructed in 1980; expansion joints created ideal roosting crevices — by accident</li>\n<li>Bats arrive in March from Mexico for summer; leave in November</li>\n<li>Females form a maternity colony; each gives birth to a single pup in June</li>\n<li>A single bat can eat up to 1,000 mosquito-sized insects per hour</li>\n<li>Bat Conservation International is headquartered in Austin, partly because of this colony</li>\n</ul>\n<h2>Story / History</h2>\n<p>When the bats first moved in after the 1980 reconstruction, residents were alarmed and petitioned to have them removed. Merlin Tuttle, a bat biologist, moved to Austin and launched a public education campaign explaining that free-tailed bats are harmless insect eaters. By the late 1980s the colony had become a celebrated attraction. Austin went from trying to evict the bats to building an observation area under the bridge. It’s a rare conservation success story where public perception fully reversed.</p>\n<h2>Insider Tips</h2>\n<ul>\n<li>Best viewing: south side of the bridge at water level, or Statesman Park on the east bank</li>\n<li>Peak colony size: August, when pups join the emergence</li>\n<li>Emergence time varies — check batcon.org for nightly estimates</li>\n<li>Wear layers; it cools down fast by the river at dusk</li>\n</ul>\n<h2>Logistics</h2>\n<ul>\n<li><strong>Tour stop duration:</strong> 45–60 min (arrival + wait + emergence)</li>\n<li><strong>Parking:</strong> Street parking along S Congress; Rainey St area garages</li>\n<li><strong>Nearby stops:</strong> South Congress Ave shops, Barton Springs (15 min drive)</li>\n</ul>\n<h2>Sources</h2>\n<ul>\n<li>Bat Conservation International: batcon.org</li>\n</ul>","frontmatter":{"title":"Congress Avenue Bridge Bats","date":"June 14, 2026"}}},"pageContext":{"slug":"/City of Austin/Congress Avenue Bridge Bats/","previous":{"fields":{"slug":"/City of Austin/Mayfield Park and Preserve/"},"frontmatter":{"title":"Mayfield Park and Preserve"}},"next":{"fields":{"slug":"/City of Austin/Austin Ghost Stories/"},"frontmatter":{"title":"Austin Ghost Stories"}}}}