3 - 5 years. Mama Duck has a good hunch that the big brown creature waddling behind her babies is no duck! As the foxy impostor sneaks closer and closer to Mama Duck's trailing brood, little ones will delight in shouting out his identity. Infectious rhythms and fresh, expressive watercolors liven up the pursuit, which ends when Mama Duck confronts the villain, beak to snout, and beats him at his own game. 40 pages. Paperback.