This research assesses the habitat preferences of rehabilitated siamangs (Symphalangus syndactylus) post-release in the Isau-Isau Wildlife Reserve, South Sumatra. Data on Siamang Joni's encounters (99 observation days, September 2024 – February 2025) were combined with vegetation analysis from plot line transects (40 m × 40 m) across three forest types: Primary, Secondary, and Bush. Preferen…