The puffin, a bird with a multi-colored beak and the physique of a plump penguin, is subject of The Nature of Things series, which makes its season debut Monday at 10 p.m. The program, Puffins, Predators and Pirates, was filmed on Great Island, off the east coast of Newfoundland, site of the puffins' nesting grounds in North America. A documentary, biological study which reveals the plight of one of the world's last puffin colonies on Great Island off the eastern coast of Newfoundland.