Monkeys and Forests

As an east wind blasts through a gap in the Cordillera de Tilaran,a rugged mountain range that splits northern Costa Rica in half, a female mantled howler monkey moves through the swaying trees of the forest canopy. A Ken Glander,a primatologist from Duke University, gazes into the canopy, tracking the female's movements. Holding a dart gun, he waits with infinite patience for the right moment to shoot. With great care,Glander aims and fires. Hit in the rump, the mo...