Forage quality and the costs of lactation for female gelada baboons

@article{Dunbar2002ForageQA,
  title={Forage quality and the costs of lactation for female gelada baboons},
  author={Robin I. M. Dunbar and L. Hannah-Stewart and Patsy Dunbar},
  journal={Animal Behaviour},
  year={2002},
  volume={64},
  pages={801-805}
}
Abstract Field studies of two species of baboons suggest that Altmann's model of maternal time budgets (1980, Baboon Mothers and Infants , Cambridge, Massachusetts: Harvard University Press) provides a good qualitative but a poor quantitative fit to observed changes in the time that mothers spend feeding across infant age. We suggest that the poor quantitative fit might be explained by the fact that food quality varies across time, so that females are forced to feed for longer to gain the same… 
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TLDR
Data from gelada baboons were used to evaluate Altmann's (1980) model of maternal time budgets, and evidence is presented to show that when females do give up social time, they seek to preserve those social relationships that are most important to their long-term reproductive interests.
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