Orangutans in Borneo and Sumatra are critically threatened by palm oil plantation expansion and logging, with welfare impacts ranging from habitat loss and starvation to direct killing and capture of orphaned individuals.
Orangutan welfare during deforestation events is severe. Animals caught in forest clearance operations face burning, injury from machinery, deliberate killing by plantation workers, and separation of dependent infants from mothers. Orangutans can live for 50+ years; orphaned infants require 7-10 years of intensive rehabilitation before release. Reintroduced orangutans face welfare risks from unfamiliar territories, competition with resident orangutans, and residual human habituation that makes them vulnerable to hunters.