Data from: Adaptive benefits of group fission: evidence from blue monkeys

Permanent group fissions are thought to represent the tipping point at
which a group has become too large and therefore splits into two, allowing
for an evaluation of the consequences of living in too large a group and
if fission can alleviate those costs. We first examined how adult female
activity budgets (feeding, moving, resting) differed among periods
surrounding (i.e., before and after) multiple fission events, accounting
for seasonal variation, and using five mixed-effects beta regression
models. We then assessed how rates of agonism differed among periods
surrounding these fission events using two negative binomial models, one
examining all agonistic interactions and one focusing on agonistic
interactions that were lost. Our third analysis used a generalized linear
mixed model to investigate a female’s likelihood of conception in a given
month, based on her individual characteristics, which post-fission group
size she joined, and whether that month fell before vs. after fission, vs.
neither. Finally, we used a mixed effects Cox proportional hazards model
to evaluate the relationship between infant survival, whether the infant’s
mother joined the small vs. large post-fission group, and whether the
month in which the infant was born fell before vs. after fission vs.
neither.  Here we present the three datasets used for these
analyses, thus presenting individualized records of both behavioral and
life history variables in relation to group fissions.