 When the Roly-Poly Bird arrives he, via his knowledge of languages, translates the Muggle-Wumps' cries of warning and so deters the birds from sitting in the tree.He is himself prevented in turn from becoming stuck to the monkeys' cage when Mr Twit smears glue on its bars, and conveys warning of this to the other birds.When the Twits leave to buy guns as a last resort, he and the Muggle-Wumps use the same glue to trick the Twits into attaching themselves, upside-down, to their floor.