If it takes a village to raise children, owl monkeys are in trouble. They are unusual--and perhaps unique--in raising children without much help from others. As with many mobile human pairs (I include my wife and me among them), owl monkey parents raise the kids by themselves. They get little or no help from extended families or neighbors. 

Most mammalian fathers do not stick around for childrearing. Humans are among the few percent of mammal species in which the fathers help with childrearing. Some species of voles and mice, and a few others, do the same. 

Owl monkey mothers nurse their offspring for about four weeks, and then both mothers and fathers begin to provide leaves, flowers, and figs. Studies suggest fathers may transfer tood to their offspring three times as often as mothers. 

In other words, after weaning, the fathers take over primary responsibility for feeding their young. Interestingly, during weaning, mothers also provide food to fathers--evidence, perhaps, of the strength of the parents' bond.