In this story written by Jonas Ribeiro and Telma Guimarães, author of the bestseller Where is the Book That Was Here?, the Owl, the Tuiuiú and the Parrot hear a strange noise in the forest and formulate several hypotheses about what that sound could be. The imagination and attitudes of each character reveal different ways of reacting to the unknown: curiosity, prudence, caution and fear. The creative dialogue between text and image is the book’s highlight. The text uses constructions that are repeated and that provokes expectations on the part of the reader with each turn of the page. Esteban Vivaldi’s illustrations explore the exuberance of Brazilian fauna and flora in a profusion of colors, movements and perspectives. While the expressiveness of the characters reinforces the nuances of the written narrative, the representation of what they are imagining amplifies the meaning of the words.