AN EXTRAORDINARY EGG

Jessica is a fancier of stones and pebbles, but her friends Marilyn and August, also frogs, don't share her enthusiasm until she turns up with what Marilyn, "who knew everything about everything," identifies as a "chicken egg." The little "chicken" that hatches is congenial and loves the water; once she even saves Jessica when she gets entangled in water weeds. Then the "chicken's" mother turns up, greeting her baby, accurately, as "my sweet little alligator." With the frogs urging them to visit soon, the alligators depart amiably, leaving the trio to laugh at the "chicken" who called her baby an alligator: "What a silly thing to say!" Lionni's mixed-media art (soft, delicately stylized settings in subtle colors, ample white space, appealing collage-like figures) is particularly felicitous, and kids will love identifying the little alligator and laughing at the frogs' mistake. Just the thing to lighten up a picture-book hour. (Picture book. 3-7)