 After the females are impregnated the gestation period lasts up to 245 days and usually birth one fawn as twins can be quite rare.The females can conceive when they are 16 months, whereas the males can successfully breed at 16 months, but most do not breed until they are 48 months.The females can become very cagy just before they give birth to their fawn and find secluded areas such as a bush or cave, sometimes females will give birth near the herd.