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A portable, comprehensive field guide--brimming with concise descriptions and stunning color photographs, and designed to fit into your back pocket--from the go-to reference source for over 18 million nature lovers.Human beings have always looked to the skies: as clock and calendar, to divine the future, for spiritual guidance. Even today, astronomers study the night sky for the key to the mysteries of the universe, as they literally look back in time to when it all began. By learning your way around the sky, you can identify constellations that our ancestors knew and even search out distant galaxies and clusters of stars that may support worlds like our own. This guide covers the Northern Hemisphere skies season by season, with close-up looks at 54 constellations visible from northern latitudes, both the familiar and the less well known. This easy-to-use pocket guide is divided into four parts: introductory essays and drawings, illustrated tours of the sky, illustrated descriptions of the constellations, and appendices.

A portable, comprehensive field guide to North American animal tracks--brimming with concise descriptions and stunning color photographs, and designed to fit into your back pocket--from the go-to reference source for over 18 million nature lovers.Designed to help readers more fully understand how animals live and survive in the wilds, this guide is a must for every nature explorer. Detailed line drawings and text reveal clues found in an animal''s tracks that help identify it.

A portable, comprehensive field guide--brimming with concise descriptions and stunning color photographs, and designed to fit into your back pocket--from the go-to reference source for over 18 million nature lovers.This handy guide covers 80 of the most common and frequently encountered birds in backyards and suburban areas of eastern North America. The majority of species are songbirds, but here also are other backyard birds such as doves and woodpeckers. The region covered by the book extends roughly from the Atlantic Ocean west to the foothills of the Rocky Mountains, north of Mexico. This traditional dividing line between eastern and western North America follows the 100th meridian, and marks a significant difference in habitats and species. The companion volume to western birds covers species west of this boundary.

A portable, comprehensive field guide to North American butterflies--brimming with concise descriptions and stunning color photographs, and designed to fit into your back pocket--from the go-to reference source for over 18 million nature lovers.This streamlined volume contains: a simple field guide identifying 80 of the most widespread butterflies in North America and a complete overview of observing butterflies, covering basic identifying field marks and practical tips for observing and distinguishing different butterflies.This pocket guide is packed with information; bright photographs capturing the butterflies perched with their wings spread and closed; specific descriptions of each species'' important identifying characteristics, life cycle, habitat and range, line drawings depicting the basic butterfly anatomy, a description of major butterfly groups and a glossary of technical terms.When observing these beautifully fragile creatures, the National Audubon Society Guide to Familiar Butterflies of North America is an excellent and handy reference guide to take along during any nature walk.