Coincident with recent global warming, species have shifted their geographic distributions to
cooler environments, generally by moving along thermal axes to higher latitudes, higher …

Much of the recent research on the evolution of primate visual systems has assumed that a
minimum number of shifts have occurred in circadian activity patterns over the course of …

Despite a general trend for larger mammals to have larger brains, humans are the primates
with the largest brain and number of neurons, but not the largest body mass. Why are great …

Habitat loss and fragmentation constrain the survival of most forest‐living mammals,
particularly strictly arboreal primates. Because fragment size directly affects food availability …

Savannah baboons are one of the few mammalian species that do not exhibit seasonal
reproduction patterns and are therefore ideally suited to study the effect of female …

In temperate regions, winter presents animals with a number of challenges including
depressed food abundance, increased daily energy requirements, higher frequency of …

Behavioral ecologists frequently use observational methods, such as instantaneous scan
sampling, to record the behavior of animals at discrete moments in time. We develop and …

In chacma baboons, Papio hamadryas ursinus, young adult males often rise to the top of the
dominance hierarchy shortly after immigrating to a new group. Such events are potentially …

Anthropogenic habitat alteration can have a dramatic effect on the spatial distribution and
ranging patterns of primates. We characterized the spatial ecology of a free-living troop of …

The ecological constraints model predicts that daily travel distance and home range size of
social animals will increase as group size increases in order to meet the dietary needs of …