Anoles are easy to overlook but once you spot one they are fun to observe. The bright green lizard that you come across on the boardwalk at Corkscrew Swamp Sanctuary is a native Florida anole or Anolis carolinensis.
This diurnal lizard’s habit of sunning themselves will make them obvious to visitors but camouflage can be their best defense. Their bright green color is a challenge to see against the green vegetation, but catch one on the trunk of a tree and it will change its color to brown. Winning a territorial fight can also cause them to green up as well as warmer temperatures of 70 degrees and above. Losing a fight and colder temperatures will cause them to turn brown. The female is recognized by a white stripe down her back. Both the male and female green anoles have a dewlap that is cream colored, although the male’s is larger.
They compete for food with the exotic Cuban brown anole, Anolis sagrei sagrei, but occupy different zones in the swamp habitat. The brown anole prefers drier areas and is mostly a ground dweller. The male can sometimes be seen displaying his red dewlap, a territorial gesture.
The green anole typically occupies the upper trunk and canopy region, although I have seen them in the wetter areas on the alligator flag and on the boardwalk railings sunning. Habitat destruction has altered the tree canopy for green anoles in most of our neighborhoods and when this happens, they have to come down to the ground to go up another tree, falling prey to the brown anole. Thankfully, the sanctuary’s canopy is intact allowing for the lizards to share the invertebrates found in the bushes and trees. They will also eat each other’s young. Both species shed their skins in patches as they grow and sometimes eat it.
Humans are also invited to eat at the swamp but please use the picnic tables.
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Audubon of Florida’s Corkscrew Swamp’s 2.25-mile boardwalk trail is open every day of the year. The Sanctuary is at the end of Sanctuary Road, located 15 miles east of Interstate 75 (exit 111) off of Immokalee Road. For admission fees and hours, call 239-348-9151 or visit www.corkscrew.audubon.org