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Photo 1 of 6 (c) Mark Whiten, all rights reserved

Photo 2 of 6 (c) Wild Sumatra, some rights reserved (CC BY-NC)

Photo 3 of 6 (c) peterthedragon, all rights reserved

Photo 4 of 6 (c) Maksym Kozlenko, some rights reserved (CC BY-SA)

Photo 5 of 6 (c) davidaw, some rights reserved (CC BY-NC)

Photo 6 of 6 (c) cuatrok77, some rights reserved (CC BY-SA)
1 of 6 photos
Siamang
Symphalangus syndactylus
IUCN Red List status: Endangered
IUCN Red List status
- Worldwide
- 1,109 observations
- Group
- Mammals
iNaturalist hides the exact location of threatened species, so a sighting can sit several kilometres from the point shown on its record.
About
The siamang (Symphalangus syndactylus) is an arboreal black-furred gibbon native to the forests of Indonesia, Malaysia and Thailand. The largest of the gibbons, the siamang can be twice the size of other gibbons, reaching 1 m in height, and weighing up to 14 kg. The siamang is the only species in the genus Symphalangus.
Summary from Wikipedia, CC BY-SA 4.0.
Recent sightings near Medan
Research-grade observations within 25 km, newest first.
- Jul 6, 2026Sumatera Utara, IDObserver: Julian BöckView observation from Jul 6, 2026 on iNaturalist