This species is widespread across the southwestern United States and northern Mexico. It is found from southwestern Wyoming to Nayarit and northern Coahuila, Mexico, and stretches across central Texas, Arizona, California, and even reaches Tiburón Island in the Gulf of California. Its range spans elevations from sea level up to approximately 9,000 feet (2,770 meters), adapting to a variety of environments.
The Ornate Tree Lizard is highly adaptable and can be found in diverse habitats, from the deserts of the southwestern U.S. to the montane forests of the Rocky Mountains. It is particularly common in areas with abundant climbing structures such as trees, boulders, and rocks. It thrives in mesquite, oak, pine, juniper, and cottonwood woodlands, as well as in urban environments where it is often seen on buildings and fences. It is frequently associated with riparian zones, especially near rivers and streams.
This diurnal species is known for its exceptional climbing abilities. The Ornate Tree Lizard is commonly seen basking on rocks, trees, or urban walls, where it remains well-camouflaged against its surroundings. It is highly territorial, particularly in males, who exhibit "push-up" displays and extend their brightly colored throats to assert dominance. The species hibernates during the colder months, typically from late fall through early winter.
The Ornate Tree Lizard primarily feeds on a variety of insects, including beetles, flies, ants, moths, crickets, grasshoppers, and termites. It also preys on spiders, making up an important part of its diet. Its feeding behavior is often opportunistic, capturing prey while foraging or basking.
Breeding occurs in the spring and summer, with one to six clutches of eggs being laid annually. The clutch size ranges from 2 to 16 eggs, which are typically deposited in moist, sheltered areas such as under rocks or in organic debris. Females may lay eggs in various locations, including urban settings like compost piles or water meter boxes. The species produces multiple clutches throughout the breeding season, ensuring the survival of the next generation.
The Ornate Tree Lizard is often confused with similar species, such as the Long-tailed Brush Lizard and the Common Side-blotched Lizard. However, it can be distinguished by its unique back pattern, the presence of a gular fold, and its shorter tail relative to body size. In contrast to ground-dwelling species, the Ornate Tree Lizard prefers vertical spaces and is adept at climbing to avoid predators. Its ability to blend seamlessly with its environment enhances its camouflage and helps it evade threats.
