Photo 16214852, (c) Francesco Ricciardi, some rights reserved (CC BY-NC), uploaded by Francesco Ricciardi

Attribution © Francesco Ricciardi some rights reserved Uploaded by francescoric Source iNaturalist Associated observations Photos / Sounds What Siamang (Symphalangus syndactylus) Observer francescoric Date April 2018 Place Gunung Leuser, ID-AC, ID (Google, OSM) Date Added April 24, 2018 08:28 AM +08 5 IDs Research Grade View Sizes small medium large original