Siamang (Symphalangus syndactylus) in a tree, Sumatra, Indonesia

hylobates syndactylus symphalangus syndactylus tropical rainforest adult alone foliage portrait front shot black look hylobates endangered iucn en on a branch siamang symphalangus syndactylus september nobody symphalangus tropical rain forests ombrophile forest shade plants rain forest rainforest rain forests ombrophile forests adults single lonely only solo one lone foliages portraits front views front sights front sight front shots front view blacks looked looking endangered species with nobody tropical forest forest area stage of development individual enumeration leaf morphology botany morphology organism shot colour hylobatidae catarrhini haplorhini primates mammalia therapsida synapsida vertebrata chordata deuterostomia coelomata bilateria metazoa opisthokonta eukaryota threatened endangered species iucn red list of threatened species species convention on international trade in endangered species of wild cites gibbon old world monkey primate mammal wild animal animal