identification

A visual guide to the natural science of trees as well as a field guide to the trees found in the United States and Canada.

A simplified field guide to the common fishes of North America.

Provides simplified descriptions of twelve of the largest families of flowering plants in North America.

A guide to the identification of shells, including general information on mollusks and advice on shell collecting and study.

Presents profiles of over 930 bird species of North America, providing color photos of males and females, distribution maps, flight pattern diagrams, and details on their physical characteristics, habitats, songs, behavior, breeding and nesting habits, and populations.

Presents a practical guide to finding, observing, and identifying birds designed for children ages eight and up.

Describes and illustrates the trees in North America, with a range map for each tree listed.

Contains color illustrations and descriptions of 278 of the most common fresh- and salt-water fishes, providing information about where they live, what they eat, their physical characteristics, and their ways of life.

A color-illustrated guide to North American insects that describes their mature and immature forms, their diet, their behavior, and their geographical range.