By Helen Lester, Author & Lynn Munsinger, Illustrator. Tacky's an odd bird, or Penguin rather, who likes to do splashy cannonballs and greet his companions with a loud "What's happening?" In fact, he's something of an eccentric, which his fellow penguins find somewhat bothersome until his odd behavior saves the day! Tacky's perfect friends find him annoying until his odd behavior saves the day. For ages 1 and up.