Today I read P.D. Eastman's wonderful FLAP YOUR WINGS about an alligator adopted by birds.
Although I've seen the illustrations of the kerchiefed mama bird before, this was first time I read the book. There seems to be quite a few books about mistaken alligator/crocodile egg identity. AN EXTRAORDINARY EGG, THE ODD EGG, GUJI GUJI, and FOXY AND THE EGG for example. (Foxy however, is far from maternal.)