ON his last survey of the Sangkulirang forests late in December, Nardiyono proved his discovery of the new orangutan population with photos and videos of the animals he found.

Nardiyono, who has worked for the conservation of orangutans for over a decade, considered the discovery an extraordinary slice of luck since orangutan populations in Kalimantan had been falling sharply, especially so with their habits of leading a solitary life and foragi