When they went down to breakfast on the morning of the thirtieth of October, they found that the Great Hall had been decorated overnight. Enormous silk banners hung from the walls, each of them representing a Hogwarts House: red with a gold lion for Gryffiindor, blue with a bronze eagle for Ravenclaw, yellow with a black badger for Hufflepuff, and green with a silver serpent for Slytherin. Behind the teachers" table, the largest banner of all bore the Hogwarts coat of arms: lion, eagle, badger, and snake united around a large letter H.