Peterson Field Guide to Birds of Western North America

Author: Roger Tory Peterson
Publisher: Houghton Mifflin Harcourt
ISBN: 9780547152707
Format: PDF, Mobi
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Presents illustrations and detailed descriptions of the most common species of birds found in the western areas of North America, with advice on bird identification and maps indicating the range of each species.

A Field Guide to Western Birds

Author: Roger Tory Peterson
Publisher: Houghton Mifflin Harcourt
ISBN: 9780618132188
Format: PDF, Mobi
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Featuring the unique Peterson Identification System, a guide to more than 1,000 birds from 700 species, including summer and winter ranges, breeding grounds, and other special range data on easy-to-read maps.

A Field Guide to the Mammals

Author: William Henry Burt
Publisher: Houghton Mifflin Harcourt
ISBN: 9780395910986
Format: PDF, Kindle
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Describes species with common and scientific names with detailed information

A Field Guide to Western Birds Nests

Author: Hal H. Harrison
Publisher: Houghton Mifflin Harcourt
ISBN: 9780618164370
Format: PDF, Mobi
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The nests and eggs of all the common birds found west of the Mississippi are covered in detail - 520 species in all. More than 400 photographs show the nests and eggs in their typical habitats. Descriptive text includes color, shape, and number of eggs for each species, plus information on nesting materials, construction, and dimensions.

Peterson Field Guide to Bird Sounds of Western North America

Author: Nathan Pieplow
Publisher: Houghton Mifflin
ISBN: 9780547905570
Format: PDF, Mobi
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A comprehensive field guide that uses an innovative Sound Index to allow readers to quickly identify unfamiliar songs and calls of birds in western North America. Bird songs and calls are at least as important as visual field marks in identifying birds. Yet short of memorizing each bird's repertoire, it's difficult to sort through them all. Now, with this groundbreaking book, it's possible to visually distinguish bird sounds and identify birds using a field-guide format. At the core of this guide is the spectrogram. With a brief introduction to five key aspects--speed, repetition, pauses, pitch pattern, and tone quality--readers can translate what they hear into visual recognition, without any musical training or auditory memorization. The Sound Index groups similar songs together, narrowing the identification choices quickly to a brief list of birds that are likely to be confused because of the similarity of their song. Identifying birds by sound is arguably the most challenging and important skill in birding. This book and the more than 6,000 sound files available online at petersonbirdsounds.com make it vastly easier to master than ever before.

A Field Guide to Mexican Birds

Author: Roger Tory Peterson
Publisher: Houghton Mifflin Harcourt
ISBN: 9780395975145
Format: PDF, Kindle
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Describes the calls, range, and male and female markings of more than one thousand species

A Field Guide to Animal Tracks

Author: Olaus J. Murie
Publisher: Houghton Mifflin Harcourt
ISBN: 9780395910948
Format: PDF, Mobi
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Text and drawings explain how to identify wild animals by the tracks and other signs they leave.

A field guide to western birds

Author: Roger Tory Peterson
Publisher: Houghton Mifflin Co.
ISBN: 9780395136928
Format: PDF, Mobi
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The most information on all land and water birds of western North America and Hawaiian Islands.