Chickens Aren't the Only Ones

Chickens Aren't the Only Ones by Ruth Heller is a children's nonfiction book that teaches about animals that lay eggs (oviparous animals) through rhyming prose and illustrations. Published in 1981, it was Heller's first book and was so successful that it launched her "World of Nature" series, which includes sequels like Animals Born Alive and Well. The book uses simple rhymes and rich vocabulary to introduce concepts like classification and the diversity of egg-laying creatures, from chickens to rays and platypuses.