vocalization

Photographs and simple text provide an introduction to the physical characteristics, behaviors, and abilities of parrots.

Text and color illustrations introduce frogs and their vital role in environmental balance in places all over the world.

Introduces frogs to early readers and includes the sounds they make, their favorite foods, and their habitat.

Introduces dolphins and the sounds they make, their favorite foods, and their habitat.

"BZZT! PLONK! BRACK!" Frogs have songs "for trees, bogs, burrows, and logs." Text and color illustrations introduce eleven frogs from around the world.

Photographs and text look at the lives and behaviors of elephants, and discuss the sounds the animals make.

In photographs and simple text, describes the wide variety of sounds made by animals in the zoo.

Introduces the phenomenon of bird song, explains how and why birds sing, describes how scientists learn about bird communication, and indicates the dangers to songbirds due to changes in their habitats.

Explains how and why birds sing.