In most birds and mammals, young are raised in family groups. The phenotypes of
nestmates and parents are thus reliable cues for recognition of conspecifics and kin …

▪ Abstract Cooperation is common across nonhuman animal taxa, from the hunting of large
game in lions to the harvesting of building materials in ants. Theorists have proposed a …

Biological responses to climate change have been widely documented across taxa and
regions, but it remains unclear whether species are maintaining a good match between …

The author shares some lessons learned from a lifetime of working with and thinking about
groups. Three types of groups are described, including the impact they have on the …

Effective camouflage renders a target indistinguishable from irrelevant background objects.
Two interrelated but logically distinct mechanisms for this are background pattern matching …

Kinship appears to be a major influence on the lives of animals. This chapter examines three
key questions. First, do animals respond differentially to kin and nonkin? Examples are …

Elephants have fascinated humans for millennia. Aristotle wrote of them with awe; Hannibal
used them in warfare; and John Donne called the elephant “Nature's greatest masterpiece …

The ability to recognize close relatives in order to cooperate or to avoid inbreeding is
widespread across all taxa. One accepted mechanism for kin recognition in birds is …

In the few species of birds in which males form display partnerships to attract females, one
male secures most or all of the copulations,. This leads to the question of why subordinate …

Kin selection promotes the evolution of social behavior that increases the survival and
reproductive success of close relatives. Among primates, maternal kinship frequently …