Further observations on the golden langur (Presbytis geei Khajuria, 1956), with a note to capped langur (Presbytis pileatus Blyth, 1843) of Assam

In continuation of the field work that was initiated in the summer of 1973 another field trip to the same area of Goalpara district was undertaken in the winter of 1973 and later on a survey of Manas sanctuary was made in winter of 1976 to collect further information about golden langur. This report incorporates the results of these two field studies and includes such information as the characteristics of the study area, total number of langur groups observed, their size and composition, food items utilised by them during winter months, inter-group and inter-specific relationships, etc. It also includes, incidentally, observations of the capped langur in the Manas sanctuary and remarks on allopatry of distribution of golden and capped langurs in this sanctuary. The range of distribution of golden langur on the Indian side and present status and future of these monkeys have been discussed. The social organisation of the golden langur has been compared with that of other langurs and the concentrations of the former in Jamduar and Raimona forests during the winter months have been compared with those in summer months.