In animal societies, control over resources and reproduction is often biased towards one
sex. Yet, the ecological and evolutionary underpinnings of male–female power asymmetries …

Ethiopia is home to one of the richest and most unique assemblages of fauna and flora on
the African continent. Contained within its borders are two major centers of endemism, the …

For more than 70 y researchers have looked to baboons (monkeys of the genus Papio) as a
source of hypotheses about the ecology and behavior of early hominins (early human …

The evolution of distinctively human life history and social organization is generally
attributed to paternal provisioning based on pair bonds. Here we develop an alternative …

In multi-male, multi-female groups of mammals, males usually compete aggressively over
access to females. However, species vary in the intensity of male contest competition, which …

In mammals characterized by a mating system in which a single male monopolizes
reproduction, infanticide is reported to occur following a male take-over, often resulting in …

The baboons (Papio sp.) exhibit marked interspecies variation in social behavior. The thesis
presented here argues, first, that male philopatry is a crucial factor, arguably the crucial …

Like humans, hamadryas baboons (Papio hamadryas) are unusual among primates in
having a multilevel social system and stable pair bonds, and are thus a useful model for the …

Objectives Raising offspring imposes energetic costs, especially for female mammals.
Consequently, seasons favoring high energy intake and sustained positive energy balance …

In many social animals, individuals derive fitness benefits from close social bonds, which are
often formed among kin of the philopatric sex. Hamadryas baboons, however, exhibit a …