An eight-month-old orangutan named Abu was found clinging to his mother in a torched oil palm estate in West Kalimantan. Her hands were peeling from walking on scorched ground. He was dehydrated and thin. They were among more than 20 orangutans evacuated by Yiari, a primate conservation non-profit, from wildfires now consuming Indonesia's forests and peatland. One rescued orangutan has already died, probably from smoke inhalation. The numbers are staggering. Habitat containing 52% of the total Bornean orangutan population is fire-affected, according to the IUCN's primate specialists. An estimated 600,000 hectares burned in August alone. Geopix, an environmental NGO, detected 4,500 fires across 21 Sumatran elephant habitats. Five endangered gibbon species face habitat destruction. Proboscis monkeys, Sunda pangolin, pythons, and king cobras have been found dead. Indonesia's forestry minister says the fires could continue until early November. The mechanism is straightforward and damning. Industrial agriculture — primarily palm oil and pulp plantations — drained vast areas of peatland that should be waterlogged. Fire is routinely used to clear land for these operations. A supercharged El Niño brought extreme dry conditions across Sumatra, Kalimantan, and Papua. The drained peat ignited, and peat fires smoulder underground, making them nearly impossible to extinguish. Eighty consecutive days without rain in parts of West Kalimantan turned the landscape into fuel. The cascading biological damage extends far beyond the flames themselves. Thick smog blocks sunlight, preventing photosynthesis and triggering mass leaf-drop from surviving trees — precisely when dry-season species like orangutans depend on leaves and flowers rather than fruit. Research shows burned peat forests remain suppressed in tree diversity even 12 years later, and repeated fires risk trapping ecosystems in permanent degradation. Orangutans exposed to smoke show ketosis from increased energy demands and reduced vocal quality persisting months after smoke clears. Gibbons, which rely on song for mating and territory, sing less under heavy smoke. Two major research stations — Tuanan in Central Kalimantan and Rangkong in West Kalimantan — are directly threatened. Tuanan's 23-year longitudinal dataset tracking 2,500 individual trees and specific orangutans is irreplaceable. Staff have improvised sprinkler systems and are fighting fires day and night. Localized rain brought temporary relief to Rangkong, but at Tuanan there is still no rain. The IUCN is calling for urgent international technical and financial support, but their statement makes the structural point: emergency response must be followed by peatland re-wetting, deforestation controls, and ensuring burned forests are restored rather than converted into new plantations. This last point is critical. The same economic incentive that drained the peat and started the fires — cheap land for palm oil — applies with equal force to burned land. Without enforcement, fire becomes the mechanism of conversion, not its byproduct. Rescuers face brutal logistics. Sedative darts must reach orangutans 30 metres up in trees. Teams of ten hold nets to catch 70kg adult males tumbling from branches. Mothers and infants fall together. Evacuated animals need quarantine, veterinary care, and eventual release into forests with adequate food and no competing populations. Finding such locations is increasingly difficult. As veterinarian Karmele Llano Sanchez puts it: finding a safe, good forest "is not easy. But we are trying to do our best."
