Frozen iguanas falling from trees during cold snap in Florida

It's so cold in Florida that iguanas are falling from their perches in suburban trees. MAXINE BENTZEL / TWITTER / WPEC-TV

MIAMI BEACH, Fla. — It’s so cold in Florida that iguanas are falling from their perches in suburban trees. Temperatures dipped below 40 degrees Fahrenheit early Thursday in parts of South Florida, according to the National Weather Service in Miami.

That’s chilly enough to immobilize the green iguanas common in the region.

Palm Beach Post columnist Frank Cerabino tweeted a photograph of an iguana lying belly-up next to his swimming pool.

CBS News affiliate WPEC posted images of an iguana on its back on a Palm Beach County road. According to reporter Maxine Bentzel, the iguanas have “a good chance of thawing out if you move them in the sun.”

But well-meaning residents finding stiffened iguanas are advised to leave them alone, as the animals may feel threatened and bite once they warm up.

“Don’t assume that they’re dead,” said Kristen Sommers, who oversees the nonnative fish and wildlife program for the Florida Fish and Wildlife Conservation Commission.

The cold-blooded creatures native to Central and South America start to get sluggish when temperatures fall below 50 degrees Fahrenheit, Sommers said. If temperatures drop below that, iguanas freeze up.

“It’s too cold for them to move,” she said.

They’re not the only reptiles stunned by this week’s cold snap: Sea turtles also stiffen up when temperatures fall. The wildlife commission’s biologists have been rescuing cold-stunned sea turtles found floating listlessly on the water or near shore, but no such rescue effort is planned for iguanas.

Green iguanas are an invasive species in Florida known for eating through landscaping and digging burrows that undermine infrastructure. They can grow to over 5 feet long, and their droppings can be a potential source of salmonella bacteria, which causes intestinal illness.

The wildlife commission has begun holding workshops to train homeowners and property managers to trap or manage iguanas. The reptiles may be easier to catch this week when it’s cold, Sommers said.

“This provides an opportunity to capture some, but I’m not sure it’s going to be cold enough or long enough to make enough of a difference,” she said. “In most cases, they’re going to warm back up and move around again, unless they’re euthanized.”

In 2010, a two-week-long cold snap with temperatures below 40 degrees Fahrenheit killed off many iguanas, along with Burmese pythons and other invasive species that thrive in South Florida’s subtropical climate. Those populations have since rebounded.

Elsewhere in Florida, the effects of the winter storm rolling up the East Coast were less exotic. It snowed briefly Wednesday in the state’s capital, Tallahassee, for the first time in 28 years.

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