A behavior repertoire for the Indian langur monkey (Presbytis entellus)

This behavior repertoire for the Indian langur monkey (Presbytis entellus) is based on observations of free-ranging langurs in north and central India and on an ongoing study of social behavior in colony-living langur monkeys. The purposes of this repertoire are: (1) to allow the investigator to record all social behavior observed, (2) to allow comparison with the results of other observations, and (3) to draw a baseline picture of behavior against which the effects of experimental manipulations may be measured. The behavior units of this repertoire are organized into the categories of general behaviors, infant caretaking, sexual, play, vocalization, agonistic, and grooming. Each unit is defined and examples are given of the contexts in which behaviors are most often used. The repertoire, as designed, is appropriate for use with a focal animal sampling method.