Data from: Variable intergroup encounters: What drives neutral and intolerant encounters in blue monkeys?

In group-living animals, between-group relations are often revealed during
intergroup encounters, which may be intolerant (competitive), affiliative
(cooperative), or neutral. Our study investigated factors that predict
different encounter types in blue monkeys, where intolerant encounters
predominate but neutral encounters also occur. Using data from 9 groups
monitored over 24 months in equatorial forest, we first examined whether
the availability of fruit, a preferred and important food, predicted
monthly encounter rates for individual groups. We then examined
how fruit availability and time of day influenced the odds that individual
encounters were intolerant vs. neutral. For a subset of encounters between
study groups with well-known histories, we examined the effects of
additional social and location factors, which included group size, the
proportion of females with infants, the time elapsed since the opposing
groups had split from each other in the past years, and the encounter’s
location on edge-centre axes for both groups. Finally, we examined how
ecological and social factors predicted individual group
behaviour (aggressive, fleeing, neutral) during encounters. The variables
we examined included encounter location, group size, group size
differential, time since the two groups split from each other, fruit
availability, and time of day. These investigations required 3 data sets
(one for each italicized item in this abstract, namely rates, encounters,
and records of group behavior).