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Iguanas
 1. Mecican spinytail iguana
 2. green iguana
juvenile spinytail iguana
juvenile black spinytail iguana (Ctenosauras similis) at Bill Baggs Park on Key Biscayne, FL, USA. Last year I only saw green iguanas at Bill Baggs and they were everywhere. Now I only saw spinytail iguanas in moderate numbers. I know an eradication effort was taken to try to get rid of the exotic iguans. I guess that it was quite successful in ridding the park of green iguanas. I wonder if that is the reason that the spinytail iguanas are not common. Population release?
spiny tail iguana
Spinytail iguana (Ctenosaura similis), Crandon Park, Key Biscayne, Miami, FL, USA. 2007.
spinytail iguana
soinytail iguana
Spinytail iguana (Ctenosaura similis), Crandon Park, Key Biscayne, Miami, FL, USA. 2007. Spinytail iguanas prefer rocky habitats, while green iguanas prefer trees and water. I have never seen a spinytail flee to water or climb a tree to escape. They always find crevices or drains to hide in. Conversely, green iguanas mostly flee by entering the water or by climbing a tree.

green iguana
Green iguana (Iguana iguana) Key Biscayne, Miami, FL, USA.

iguana
spiny tail iguana
Spiny iguana (Ctenosaura similis), Crandon Park, Key Biscayne, Miami, FL, USA. 2006. Contrary to past belief, nearly all spiny-tails in the Miami area are C. similis and not C. pectinata.

green iguana
green iguana
Green iguanas (Iguana iguana), Fairchild Botanical Garden, Miami, FL, USA. This coloration pattern like camouflaging on many of the iguanas at Fairchild was unlike any others I have seen in Miami.
 
spiny tail iguana at bill braggs
juvenile black spinytail iguana (Ctenosauras similis) at Bill Baggs Park on Key Biscayne, FL, USA. They are probably green as juveniles to make it easier to hide among herbaceous plants than if they are gray. However, they are mostly terrestrial and the ground as little green cover.
spinytail iguana
Spinytail iguana (Ctenosaura similis), Crandon Park, Key Biscayne, Miami, FL, USA. 2007.
spinytail iguana hiding
A 3-ft spinytail iguana (Ctenosaura similis) is not what is typically hiding in one's front yard.
green iguana
Green iguana (Iguana iguana) Key Biscayne, Miami, FL, USA

male green iguana
Green iguana (Iguana iguana) Key Biscayne, Miami, FL, USA. This large male has the bronze-orange colorations typical of an old breeding male.

green iguans
green iguana
Green iguanas (Iguana iguana), Fairchild Botanical Garden, Miami, FL, USA. This old male has the typical large dorsal spines and spines on the below and above the mouth.  The brilliant green color of the juveniles is entirely lost in the adults.
 
spinytail iguana
spinytail iguana
Most place have rats going in and out of the gutters, but Miami has iguanas.




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