There Is a Bird on Your Head! (Elephant & Piggie series)

Gerald is careful. Piggie is not. Piggie cannot help smiling. Gerald can.
Gerald worries so that Piggie does not have to. Gerald and Piggie are best
friends. In There's a Bird on Your Head! Gerald discovers that there is
something worse than a bird on your head - two birds on your head! Can Piggie
help her best friend? Told entirely in speech bubbles with a repetitive use of
familiar phrases, this highly original book is perfect for children just
learning to read."