The vocalizations of pygmy marmosets (Cebuella pygmaea).

The vocalizations from a colony of pygmy marmosets are described along with the context in which each was likely to occur. Three contact--location calls were observed to be similar in physical structure, but each appeared in a different context. The ontogeny of these contact-location calls is presented and demonstrates a greater correlation with stages of parental dependence than with chronological age. Alerting and agonistic vocalizations also are described. Many of the vocalizations show close similarity to those of other species of marmosets.