 This mating behaviour within the rut most often occurs in leks, where males congregate in small groups on mating territories in which the females’ only purpose for visiting these territories is for copulation.But there can be variation within fallow deer mating systems, other than the traditional behaviour of lekking different types of mating behaviours can include harems, dominance groups, stands, temporary stands, and multiple stands.Different populations, environmental variation, size, and even age can determine the type of variation within a fallow deer mating system.