Books included: 

Nat Geo, Birds, 1997, Discover what kind of bird can fly backward, why no other animal can sing like a bird, how the shape of an owl's face help it hear, that some birds never leave the ground! Clear, lively text, close-up photographs, original art, and a glossary and index make BIRDS a valuable learning companion. The Nature Library reflects the high standards of accuracy and excellence you expect from the National Geographic Society, the World's largest nonprofit scientific and education organization. Designed as a reference for young students, the Nature Library series builds information spread by spread and book by book to give readers a complete view of the natural world. 

Nat Geo, Reptiles & Amphibians, 1993, Discover where a sea turtle lays its eggs, why a poison-dart frog carries its tadpoles piggyback, what makes an alligator a crocodilian, that a gecko can walk on ceilings! 

Nat Geo, Fish, 1997, Discover what fish and humans have in common, why some fish have "flashlights," how a fish out of water survives, that some "fish" aren't fish at all! 

Nat Geo, Insects, 1997, name inscribed inside front cover, Discover how the praying mantis got its name, why leaf cutter ants are world-class weight lifters, what it means to be a bug, that fireflies "talk" in a flash!