A pair of endearing concept books features a small duck and her playtime companions. What’s Up Duck? includes nine examples of opposites in the interactions among the duck and her friends (a goose, another duck, and a bluebird). From “front” to “back,” the lovely little book has tremendous appeal. In Duck & Goose 1, 2, 3 the same group showcases the numbers one through ten through their play. Amusing illustrations—these small birds are simply painted and charmingly irresistible—suggest a warm, fuzzy feeling of affection shared by the four feathered friends in the volumes—simply ducky! (Ages 2–4)