The iguana relies on color and display to identify iself and to attract mates. Behavior outside of the mating season differs than behavior during mating season in three major ways. First, adult iguanas spend the majority of their time immobile, apparently resting, during normal waking hours. Second, few high intensity displays are used in their interactions. Lastly, day to day movements are often nomadic.
Female iguanas tend to choose mates directly based on male phenotypes.
Females aggregate in the mating territories of the largest males and preferentially mate with them. Female iguanas usually build nests very dispersed from one another in areas with sandy soil. In areas where soft soil is scarce, females tend to built nests aggregated in small sandy patches. Females use moderately straight terrestrial paths to move from their home site to the nest. After 7 days spent at the nest site, nearly the identical path is used to travel back to the home site.