Sexual dimorphism is relatively marked in Lesser Antillean iguanas (Iguana delicatissima). The color of the dominant males tends towards dark gray with a larger and very white head, while the females are generally green to green-brown, with a whitening head. The species is oviparous and polygamous with a sexual ratio between 1/1 and 1/7, that of the males rising to twelve females. The breeding season extends from April to August and coincides with the development of vegetation in the rainy season. Dominant males then defend their territory through intimidation techniques (head-bobbing, body swelling, biting, tail slapping) against other males seeking to take possession of the resident females. The females reach their sexual maturity around the age of three, before the males that must be strong enough to defend their territory. The male courts the females by nodding his head towards the one he has chosen. Once the courtship is complete, mating usually lasts about ten minutes and can be repeated several times. The female will then lay 15 to 30 eggs in a tunnel dug into the ground. The young iguanas hatch three months later, but only 2.6 % of them reach the age of one year.