Primates spend a significant proportion of their lives at sleeping sites, and the selection of a secure and stable nest tree can be crucial for the individual’s survival and fitness. This study examined nesting site preferences of Bornean Orangutans Pongo pygmaeus wurmbii (Tiedemann) in a degraded peat-swamp forest in the Sabangau catchment, Central Kalimantan, Indonesia. Orangutan nests were i...
