Features many layers of information. The main text provides a general survey of the defining traits of hummingbirds. The illustrations and captions provide additional details, such as the names of different types of hummingbirds. At the book's conclusion, each illustration is presented in a smaller format with a very detailed paragraph of explanation. As a result, the book provides options that will keep readers coming back to it for a few years. Describes the physical characteristics, behavior, life cycle, and habitats of hummingbirds.

Educator and author Cathryn Sill uses simple, easy-to-understand language to teach children what hummingbirds are, how they look, how they move, what they eat, and where they live. Illustrator John Sill introduces readers to many varieties of hummingbirds, from the smallest type:the Bee Hummingbird of Cuba:to the largest:the Giant Hummingbirds of the Andes Mountains in South America. An afterword provides details on the hummingbirds featured and inspires young readers to learn more about them.