Preview Siamang, (Symphalangus syndactylus), adult calling on tree, Southeast Asia, Asia Image ID: 1172-2363 Artist: Juergen & Christine Sohns Purchase a commercial license Buy framed prints & more from our print store siamang symphalangus syndactylus adult adults call calling tree southeast asia asia vertical gibbon gibbons endangered specie monkey monkeys ape apes primate primates mammal mammals animal animals zoology wildlife wild outdoor outdoors outside color colour no people nature