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Monkey responses to three different alarm calls: evidence of predator classification and semantic communication.
Recordings of the alarms played back when predators were absent caused Vervet monkeys to run into trees for leopard alarms, look up for eagle alarms, and look down for snake alarms.
Vervet monkey alarm calls: Semantic communication in a free-ranging primate
Strong and Consistent Social Bonds Enhance the Longevity of Female Baboons
Howlers: variations in group size and demography
Signalers and receivers in animal communication.
In animal communication natural selection favors callers who vocalize to affect the behavior of listeners and listeners who acquire information from vocalizations, using this information to represent…
The adaptive value of ‘friendships’ to female baboons: experimental and observational evidence
Both observations and experiments suggest that the benefits of friendships to females derive from the protection of their infants against infanticide.
How Monkeys See the World
This chapter summarizes the author's research into how monkeys see the world through the lenses of vocal communication and social relationships and describes how these perceptions changed over time.
The benefits of social capital: close social bonds among female baboons enhance offspring survival
- J. Silk, J. Beehner, D. Cheney
- BiologyProceedings of the Royal Society B: Biological…
- 7 September 2009
In a group of free-ranging baboons, Papio cynocephalus ursinus, the offspring of females who formed strong social bonds with other females lived significantly longer than the offspring who formed weaker social bonds, providing the first direct evidence that social relationships among female baboons convey fitness benefits.
Behavioural and hormonal responses to predation in female chacma baboons (Papio hamadryas ursinus)
- A. Engh, J. Beehner, D. Cheney
- PsychologyProceedings of the Royal Society B: Biological…
- 22 March 2006
While the death of a close relative was clearly stressful over the short term, females appeared to compensate for this loss by broadening and strengthening their grooming networks, and perhaps as a result, females' GC levels soon returned to baseline.
Baboon loud calls advertise male quality: acoustic features and their relation to rank, age, and exhaustion
- J. Fischer, D. Kitchen, R. Seyfarth, D. Cheney
- PhysicsBehavioral Ecology and Sociobiology
- 21 January 2004
It is reported that acoustic features of wahoos also reveal information about male competitive ability, and variation in these acoustic features may function as an indicator of a male’s stamina.