Christian Daug whistles with all the spirit he can muster. “The male and female were perched there yesterday,” he says, pointing to a dead tree amid the sea of flora that smothers the tallest mountain on the Philippine archipelago.
He whistles again as we look out over the jungle from a wooden observation post. This area is one of the last remaining strongholds of Pithecophaga jefferyi: one of the world’s largest and rarest eagles. Measuring about a metre in height when perched, with a wingspan that can reach more than two metres (6.5ft), it is known locally as the “monkey-eating eagle”. The enormous raptors prey primarily on macaques, but also feed on pythons, chickens, cats and dogs.
