Why Iguanas Are Falling From Trees: A Chilly Mystery in the Florida Keys 🌴🦎

Dear Road Trippers,

The Florida Keys are known for their sunny skies, warm breezes, and quirky wildlife, but there’s one phenomenon that might catch visitors by surprise: iguanas falling out of trees! It’s not because they’re clumsy or tired of hanging out—it’s all thanks to the unique effects of chilly weather in this tropical paradise.

Let’s dive into the details of these "falling iguanas," their fascinating behavior, and what to do if you encounter one. Plus, check out exciting events happening in the Keys this week and next!

Iguanas: Florida Keys’ Unlikely Tree-Dwellers

Iguanas have become a notable part of the Florida Keys landscape. With their vibrant green coloring, spiky crests, and long tails, these reptiles are hard to miss. However, their story in the Keys is more complex than just being fascinating wildlife—they are an invasive species with a quirky connection to cold weather that surprises visitors and locals alike.

How Did Iguanas Get Here?

The Florida Keys didn’t always have iguanas lounging in trees or darting across gardens. They first arrived as pets, imported from their native habitats in Central and South America. Over time, many were either released intentionally or escaped captivity, finding the subtropical climate of the Keys to be an ideal home.

Without natural predators to control their population, iguanas quickly multiplied, becoming a widespread presence from Key Largo to Key West.

The Cold Weather Phenomenon: Iguanas Falling from Trees

Iguanas are ectothermic, meaning they rely on the environment to regulate their body temperature. This works well in the tropical warmth of the Keys, but when temperatures dip below 40°F (4°C), iguanas face serious challenges.

What Happens When It Gets Cold?

• Temporary Paralysis: When the temperature drops, iguanas’ muscles lose functionality, causing them to become immobile.

• Falling from Trees: Since iguanas often perch in branches to soak up the sun, cold-stunning can cause them to lose their grip, resulting in their dramatic descent.

• Not Dead, Just Dormant: Despite appearing lifeless, these iguanas are very much alive. As temperatures rise, they typically regain mobility and continue their day as if nothing happened.

What to Do if You See a Cold-Stunned Iguana

If you encounter a cold-stunned iguana, remember these key tips:

• Don’t Touch: A stunned iguana might seem harmless, but as they warm up, they can regain mobility and act defensively.

• Call for Help: If an iguana appears to be injured or in danger (such as on a busy road), contact local wildlife authorities or animal rescue groups for assistance.

• Let Nature Take Its Course: In most cases, the best thing to do is leave the iguana where it is. Once temperatures rise, they’ll recover on their own.

Upcoming Events in the Florida Keys

While you’re exploring the unique wildlife of the Keys, don’t miss out on these exciting events happening this week and next:

Key West Literary Seminar: Family

• When: Jan. 11–14

• Where: San Carlos Institute, 516 Duval St, Key West

• Details: A four-day celebration of literature exploring the theme of family. Enjoy readings, workshops, and panel discussions with renowned authors.

• Learn More: Key West Literary Seminar

Paula Poundstone at Key West Theater

• When: Jan. 9, 8:00 PM

• Where: 512 Eaton St, Key West

• Details: Laugh your way through an evening of observational humor with this iconic comedian.

• Learn More: Paula Poundstone Tickets

Florida Keys Celtic Festival

• When: Jan. 13–14

• Where: Marathon Community Park, MM 49, Marathon

• Details: Experience the sights and sounds of Celtic culture with live music, dancing, and traditional food. Performances include Albannach and The Screaming Orphans.

• Learn More: Florida Keys Celtic Festival

Outdoor Movie Night at Fort East Martello

• When: Jan. 10, 5:00 PM

• Where: 3501 S. Roosevelt Blvd, Key West

• Details: Enjoy a family-friendly film screening under the stars at this historic site. Grounds open at 5:00 PM, with the movie starting at dusk. Admission is free!

• Learn More: Outdoor Movie Night

The Takeaway: A Quirky Wonder of Nature

The "falling iguana" phenomenon is one of the Florida Keys’ most unusual natural events, highlighting the adaptability (and vulnerability) of these fascinating reptiles. While they may be invasive, iguanas have become a quirky symbol of island life, reminding us of nature’s unexpected wonders.

Have you ever spotted an iguana in the Keys—or witnessed their cold-weather antics? Reply to this email with your story or photos, and we may feature them in an upcoming newsletter!

Wishing you sunny skies and exciting adventures,
Brian

Florida Keys Road Trip Team