Islam M A, Husain K Z
Folia Primatol (Basel). 1982;39(1-2):145-59. doi: 10.1159/000156072.
There are little published data on the ecology of the capped langur (Presbytis pileatus), so a study of this species was undertaken at Madhupur National Park, Bangladesh, from December 1977 to July 1978. The langurs spend 32% of their 709-min day feeding, 49% in sitting and resting, and 19% moving, playing and grooming. Feeding occurs in the early morning and late afternoon, and there is a peak of resting in the middle of the day. Leaves form the major part of the diet (61%), with flowers, fruits, and seeds next in importance (30%). On average, groups move about 450 m each day.
关于戴帽叶猴（Presbytis pileatus）的生态学研究，已发表的数据很少，因此于1977年12月至1978年7月在孟加拉国的马杜布尔国家公园对该物种进行了一项研究。叶猴在其709分钟的一天中，32%的时间用于觅食，49%用于坐着休息，19%用于移动、玩耍和梳理毛发。觅食发生在清晨和傍晚，中午休息时间达到高峰。树叶构成了饮食的主要部分（61%），其次是花、果实和种子（30%）。平均而言，群体每天移动约450米。
