Many times the visibility was as low as 30 metres and we felt chest tightness and headaches." Hermansyah said. "We believe these orangutans were also experiencing the same suffering." Many rescued orangutans are malnourished and dehydrated, and terrified of humans after hostile encounters with villagers. some reguire surgery for infections exacerbated by the haze, while others are too scared to venture outside of their enclosures. the theral level at the centre still sits on "code yellow" but the pace and scale of the approaching fires have forced programme manager denny Kurniawan to consider an unprecedented evacuation of all 470 orangutans.