Ornate Tree Lizard
Iguana-type lizard that lives in rocky areas around and in conifer forests.
About This Species
Ornate tree lizards have an interesting social hierarchy that determines mating and territory. The males of the species are divided into different subgroups due to their coloration which aligns with different hormonal compositions, which has lead some scientists to postulate that there are different male genders within this species.
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Physical Characteristics
This tan-gray lizard is identifiable by the dark crossbars and row of enlarged scales running down the back. In Colorado, adults are at least 2.2 inches (55 mm) snout-vent length (SVL). Males often show a blue-green patch on each side of the belly and a colored throat ranging from orange to blue. Belly patches are fainter on females and throat color is typically yellowish.
Range
Western quarter of the state, up to 8,000 feet elevation (lower in the north).
Habitat
Prefers rocky areas such as cliffs, canyon walls, and talus slopes. Vegetation often consists of pinyon pine, juniper, and shrubs.
Diet
Any available small invertebrate.
Reproduction
Males can have different throat colors within a population, correlating with different mating strategies. Mating, which begins in mid-May, appears to be monogamous in some areas. Females may produce two clutches of eggs a year, with clutches being observed as late as July. Elevation is likely to play a large role in timing of clutches. Clutches average 2-5 eggs. Eggs are 0.4 x 0.24 inches (9-10 mm x 6 mm) and hatchlings are around one inch SVL.