These nocturnal herbivores’ slow pace and algae-toned fur make them difficult for predators to spot. They sleep 20 hours a day hanging upside-down among connecting vines; movement along the vines gives early warning of trouble.
Pogonornis dubius Barbets are closely related to Toucans, and more distantly to Woodpeckers. No living birds have teeth. However, this species has prehistoric-looking saw-like…