Following Darwin's original insights regarding sexual selection, studies of intrasexual
competition have mainly focused on male competition for mates; by contrast, female …

Darwin developed the theory of sexual selection to account for the evolution of weaponry,
ornamentation and other secondary sexual characters that are commonly more developed …

Fish travel in schools, birds migrate in flocks, honeybees swarm, and ants build trails. How
and why do these collective behaviors occur? Exploring how coordinated group patterns …

In this innovative celebration of diversity and affirmation of individuality in animals and
humans, Joan Roughgarden challenges accepted wisdom about gender identity and sexual …

Relationship, connection, and engagement have emerged as key values in recent studies of
human–animal relations. In this article, I call for a reexamination of the productive aspects of …

Although cooperation is a widespread phenomenon in nature, human cooperation exceeds
that of all other species with regard to the scale and range of cooperative activities. Here we …

Despite the growing interest in collective phenomena such as “swarm intelligence” and
“wisdom of the crowds,” little is known about the mechanisms underlying decision-making in …

Despite the obvious benefits of directed mechanisms that facilitate the efficient transfer of
skills, there is little critical evidence for teaching in nonhuman animals. Using observational …

In many cooperatively breeding vertebrates, a dominant breeding pair is assisted in
offspring care by nonbreeding helpers. A leading explanation for this altruistic behavior is …

In many animal societies, dominant individuals monopolize reproduction, but the tactics they
employ to achieve this are poorly understood. One possibility is that aggressive dominants …