identification

Provides a guide to identifying the tracks of animals native to the East coast, from Pennsylvania up through Canada.

An identification guide to snakes that discusses their anatomy, behavior, reproduction, and feeding habits.

A field guide to edible wild plants growing in the United States and Canada.

Covers the thirty-five most difficult groups of birds to identify from winter loons to confusing fall warblers.

The encylopdia of shells is a detailed reference guide for both the shell collector to the serious student.

"Learn about nine different types of butterflies including: monarchs, viceroys, and giant swallowtails"--Provided by publisher.

A field guide to over 300 species of birds of prey. Includes detailed descriptions of markings, flight characteristics, migration and plumage changes.

A field guide to trees around the world, each depicted by a full-color photograph with a caption that describes key features and points of differentiation.