Tufted Gray Langur Semnopithecus priam thersites Madras-gray-langur Coromandel-sacred-langur Mammal mammals Monkey SEMPRI TGLA Cercopithecidae primate primates Sri Lanka October Forest close-up curious watch observe expression clever wild behaviour sitting sit portrait ape animal animals asia cute eye face gray hair hanuman head outdoors summer tree wilderness wildlife leaf-eating black white eyes crown tuft beard eyebrows hatch hatching breed breeding incubate incubating Asia