Scientists have discovered a freakish, birdlike species of dinosaur — 11 feet long, 500 pounds, with a beak, no teeth, a bony crest atop its head, murderous claws, prize-fighter arms, spindly legs, a thin tail and feathers sprouting all over the place. Officially, it’s a member of a group of dinosaurs called oviraptorosaurs. Unofficially, it’s the Chicken From Hell.