Are cardinals ever cranky? Are ostriches often outraged? Are penguins perturbed? Ruffle a few feathers and discover the truth about scores of real-life angry birds and their in-game Angry Birds counterparts. Author Mel White reveals the sometimes funny, always agitated behaviors of aggressive avians with attitude, grouped in four "levels" of anger that progress from Annoyed to Testy to Outraged to Furious and lead up to "The World's Angriest Bird." Plus, within each level are the full, in-depth personality profiles of the birds from the Angry Birds game, including their hobbies, their life stories, and what makes them really mad!

At head of title: National Geographic.