wild terai gray langur or semnopithecus hector family roadblock on safari track playful babies in scenic trail chuka eco tourism

common langur semnopithecus langurs pilibhit tar road track tarai himalayan gray northern plains india baby fighting playing playful ajax hector monkey sacred family roadblock showstopper habitat landscape national park group primate species hanuman indian face natural nature expression forest threatened outdoor jungle mammal old world monkeys funny black safari animal travel wild wildlife terai