"Hello, Hippo! Good bye, Bird!" is fun picture book written by Utah author Kristyn Crow and illustrated by Argentinian artist Poly Bernatene. The book is intended for children ages 3-7.
Bird wants to be friends with Hippo, but Hippo wants to be left alone. Bird tells Hippo jokes. Hippo wants Bird to go away. Even though Bird makes himself into an umbrella and keeps bugs off of Hippo by eating them, Hippo still wants Bird to leave him alone. But then, after Bird is gone and a thunderstorm comes, Hippo starts to think he has made a mistake.