Black langurs also known as Hanuman langurs

black langurs hanuman langurs regionally contemplating daydreaming sitting iron cage semarang zoo indonesia afternoon environment animal kingdom big reserve biodiversity adult biosphere sparse blackface adaptive deforestation protected ecology exotic endangered life extinction nature growing population habitat sunlight hanuman languor heritage site high plateau inhabit arboreal instinct ancestors jungle safari living primates low moderate altitude matured season monkey god nature prey northern east open field outdoor realistic predator encroachment primates preservation resting relaxing safari tropical south east species territory summer travel territorial conservation tourism mammal wilderness herbivore zoo sanctuary zoology excursion