Willis, John

A simple introduction to seasons.

Reindeer's ankles make a clicking sound when it walks and have wider feet than any other deer. Discover more about these cold-weather herbivores.

Find out exciting facts about piranhas, including how they eat plants as well as meat, how they stay safe by swimming in groups, and more.

Find out exciting facts about orcas, including how they are the largest kind of dolphin, how they use sound to help them catch their food, and more.

The food flamingos eat colors their feathers and they often stand on just one leg. Discover more about these brightly colored birds.

An introduction to biological adapatations, covering where they are found, different types, how they are studied, and more.

An introduction to military helicopters, with photos, facts, and key words.

An introduction to military fighter jets, with photos, facts, and key words.

Simple text and illustrations introduce young readers to crickets, discussing how they live, what they eat, and more.

Aircraft carriers are some of the most amazing military machines in the world. Learn about the mechanisms and uses of aircraft carriers.