How do you tell the difference between a rooster and a hen? What happens inside an incubating egg? Does a rooster really crow at sunrise? Kids can become experts in all things Gallus gallus domesticus with this encyclopedia of Chickenology. Learn all about these fabulous fowl, including the different types of plumage and comb varieties, how to identify various breeds, how chickens have shaped history, the bird's evolution from dinosaur to today, and even the language of chickens. Chickenology provides youngsters with educational illustrations, fun facts, and cool insight into these fine feathered friends. Now that's something to crow about! For ages 5 and up.