 The Roly-Poly Bird appears in a number of children's books by Roald Dahl – in two cases alongside Muggle-Wump the monkey.The Roly-Poly Bird is large, with fantastically coloured tailfeathers, and in Quentin Blake's illustrations has a blue body, a long neck and a crest on his head - rather like a peacock.He nests in an orange tree at least once, and his favourite foods are berries.