Bracken Cave Preserve
Jonathan Alonzo

Bracken Cave is the summer home of more than 20 million Mexican free-tailed bats (Tadarida brasiliensis), making it the world’s largest bat colony and one of the largest concentration of mammals on earth. The emergence of these millions of bats, as they spiral out of the cave at dusk for their nightly insect hunt, is an unforgettable sight.

The 2021 Bat Flight season at Bracken Cave Preserve runs from June through September.

All in-person bat flights at Bracken Cave Preserve have sold out for the season. Scroll below for available virtual opportunities to experience the wonder of bats at Bracken Cave Preserve.


  • A registration access code will be emailed to members the week of April 12, or included in the membership confirmation email for those joining or renewing after that time. You will need this code to register for any of the member-only events (virtual or in-person).
  • Members supporting BCI with a $45 annual membership and those who have added an annual membership to an adopt-a-bat may bring up to 3 guests. Members supporting BCI monthly or with a $60 or more annual membership may bring up to 5 guests. Members may attend one Member Bat Flight at Bracken each season (1 Membership = 1 Member Bat Flight per year). Subject to availability. Bat flights fill quickly.
  • If you are NOT already a memberjoin here. Unsure about your membership status? Email

In-Person Member Bat Flightsall in-person member bat flights for the 2021 season have sold out. Check back frequently as spots may open up due to cancelations.

Fri Jun 11 SOLD OUTThu Jul 8 SOLD OUTTue Aug 3 SOLD OUTThu Sep 2 SOLD OUT
Sat Jun 12 SOLD OUTFri Jul 9 SOLD OUTThu Aug 5 SOLD OUTSat Sep 4 SOLD OUT
Wed Jun 16 SOLD OUTTue Jul 13 SOLD OUTSat Aug 7 SOLD OUTFri Sep 10 SOLD OUT
Fri Jun 18 (adult only) SOLD OUTSat Jul 17 (adult only, $10/pp) SOLD OUTTue Aug 10 SOLD OUTSat Sep 11 SOLD OUT
Thu Jun 24 SOLD OUTTue Jul 20 SOLD OUTFri Aug 13 SOLD OUTMon Sep 13 SOLD OUT
Sat Jun 26 SOLD OUTFri Jul 23 SOLD OUTSat Aug 14 SOLD OUTThu Sep 16 SOLD OUT
Mon Jul 26 SOLD OUTTue Aug 17 SOLD OUTFri Sep 17 (adult only, $10/pp) SOLD OUT
Tue Jul 27 SOLD OUTFri Aug 20 SOLD OUTTue Sept 21 SOLD OUT
Thu Jul 29 SOLD OUTSat Aug 21 SOLD OUTFri Sep 24 SOLD OUT
Sat Jul 31 SOLD OUTTue Aug 24 SOLD OUTSat Sep 25 SOLD OUT
Wed Aug 25 SOLD OUTTue Sep 28 SOLD OUT
Fri Aug 27 (adult only, $10/pp) SOLD OUTWed Sep 29 SOLD OUT
Tue Aug 31 SOLD OUTThu Sep 30 SOLD OUT

Member-Only Virtual Bat Flights – Join us for member-only virtual Bracken Bat Flights via Zoom April 16 (“Opening Night”), April 22 (Earth Day), and select Thursday nights from May through September. Use the access code provided by email (the same code used to schedule an in-person bat flight-see above) to register. Registration is open.

Other Member-Only Virtual Experiences – Join us to experience the world of bats, virtually. We’ll explore Bracken Cave Preserve and bats around the world through a number of member-only online experiences including Bracken Briefs and Bat Briefs (mini sessions with specific bat-related themes) and events meant to bring you inside the world of bats. Registration is open. See our Event Calendar for details.

2021 Public Opportunities (SOLD OUT)

  • A limited number of public opportunities to attend a bat flight in person and virtually have been added this year.

In-Person Bat Flights

Thu June 17 SOLD OUTThu Jul 15 SOLD OUTFri Aug 6 SOLD OUTFri Sep 3 SOLD OUT
Fri Jun 25 SOLD OUTFri Jul 30 SOLD OUTThu Aug 12 SOLD OUTThu Sep 9 SOLD OUT
Wed June 30 SOLD OUTSat Aug 28 SOLD OUT

Virtual Bat Flights – Experience the thrill of 20 million bats emerging from their summer home at Bracken Cave Preserve – virtually. No registration needed, just join in at on April 17 (International Bat Appreciation Day), May 7, May 9 (Mother’s Day), June 4, June 20 (Father’s Day), August 6, August 29 (International Bat Night), and September 12 (Grandparent’s Day). (Check our event calendar a few days ahead of time for the start time as they will vary throughout the summer)

Other Virtual Experiences – Additional opportunities to experience the world of bats virtually have been added to our Event Calendar. Registration is open.

If you are trying to book a group visit for your club, troop, class or other organization, email

For other commonly asked questions about visiting Bracken Cave Preserve, check out our Visitation FAQS.