Restoring North America's Birds

Restoring North America's Birds PDF

Author: Robert A. Askins

Publisher: Yale University Press

Published: 2008-10-01

Total Pages: 354

ISBN-13: 0300127111

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DIVThe decline of bird species in a wide range of North American habitats—forests, prairies, shrublands, mountain regions, marshes, and deserts—has inspired two decades of intense scientific study of bird ecology and conservation. But for professional scientists and amateur birders alike, interpreting the results of these diverse studies is often complex and bewildering. This accessible book pulls together recent research on bird species and habitats to show how basic ecological principles apply in seemingly different situations. Robert A. Askins provides an engaging introduction to bird ecology and concepts of landscape ecology, focusing on such intriguing species as Bachman’s Warbler, Red Crossbill, Mountain Plover, and Marbled Murrelet. Understanding the ancient landscapes of North America and how humans have changed them, Askins says, is essential for devising plans to protect and restore bird populations. In addition to such obvious changes to the landscape as the clearing of forests and plowing of prairies, more subtle changes also dramatically affect birds. Species may disappear when we interrupt natural disturbances by suppressing wildfires or trapping out beaver, or when we disrupt habitat with roads and housing developments. Askins challenges some of the assumptions that underlie current conservation efforts and offers concrete recommendations, based on sound ecological principles, for protecting the rich natural diversity of North America’s birds./div

Restoring America's Wildlife, 1937-1987

Restoring America's Wildlife, 1937-1987 PDF

Author: Harmon Kallman

Publisher:

Published: 1987

Total Pages: 408

ISBN-13:

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Fittingly, the Act's chief sponsors were a Senator from Nevada, Key Pittman, and a Representative from Virginia, A. Willis Robertson. The Pittman-Robertson Act, as it came to be called, sped through Congress and was signed into law by President Franklin Roosevelt on September 2, 1937. From a modest beginning, the Pittman-Robertson program has grown with the economy and the human population of our country. By now it has channeled nearly $1.7 billion in Federal excise tax receipts, augmented by some $600 million from the States, into activities to restore wildlife. The projects include State acquisition of acreage needed to bring wildlife back, research into wildlife requirements and problems, active management of habitats, and development of scientific ways to enable wildlife and people to share our land in harmony. The program has strengthened State governments and built wildlife management into a respected profession.

The North American Grouse: Their Biology and Behavior

The North American Grouse: Their Biology and Behavior PDF

Author: Paul Johnsgard

Publisher: Lulu.com

Published: 2016

Total Pages: 177

ISBN-13: 1609620879

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The ten currently recognized species of grouse in North America have played an important role in America’s history, from the famous but ill-fated heath hen, a primary source of meat for the earliest New England immigrants, to the ruffed grouse, currently one of the most abundant and soughtafter upland game birds in more than 40 states and provinces. This book summarizes the ecology, reproductive biology, and social behavior of all ten of the extant North American grouse species. It also describes the current status of grouse populations, some of which are perilously close to extinction. The social behavior of grouse is of special biological interest because among these ten species there is a complete mating system spectrum, from seasonally monogamous pair-bonding to highly promiscuous mating patterns. The latter group illustrates the strong structural and behavioral effects of sexual selection resulting from nonmonogamous mating. These influences reach a peak in the development by some grouse species of engaging in mating “leks,” arena-like competitions performed by males while attempting to attract fertile females, and also provide opportunities for females to select optimum mating partners. These sexual competitions also promote strong differences evolving in sexual signaling behaviors (“displays”) among closely related species. Nevertheless, a relatively high incidence of mating errors and resulting hybridization often occurs in spite of these marked behavioral differences. In addition to a text of 101,000 words, the book includes 16 range maps, 37 line drawings, and 38 photographs by the author, as well as nearly 1,400 literature citations.

Birds of the Salton Sea

Birds of the Salton Sea PDF

Author: Michael Patten

Publisher: Univ of California Press

Published: 2003-08-19

Total Pages: 379

ISBN-13: 0520929446

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The Salton Sea, California’s largest inland lake, supports a spectacular bird population that is among the most concentrated and most diverse in the world. Sadly, this crucial stopover along the Pacific Flyway for migratory and wintering shorebirds, landbirds, and waterfowl is dangerously close to collapse from several environmental threats. This book is the first thoroughly detailed book to describe the birds of Salton Sea, more than 450 species and subspecies in all. A major contribution to our knowledge about the birds of western North America, it will also be an important tool in the struggle to save this highly endangered area. Synthesizing data from many sources, including observations from their long-term work in the area, the authors’ species accounts discuss each bird’s abundance, seasonal status, movement patterns, biogeographic affinities, habitat associations, and more. This valuable reference also includes general information on the region’s fascinating history and biogeography, making it an unparalleled resource for the birding community, for wildlife managers, and for conservation biologists concerned with one of the most threatened ecosystems in western North America.

American Museum of Natural History: Pocket Birds of North America, Western Region

American Museum of Natural History: Pocket Birds of North America, Western Region PDF

Author: Stephen Kress

Publisher: National Geographic Books

Published: 2017-01-10

Total Pages: 0

ISBN-13: 1465456309

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Profiling more than 400 of the most commonly seen birds in western North America, this handy photographic field guide brings each species to life on the page. From the bald eagle to the California quail to the golden-crowned sparrow, high-quality photographs capture the beauty of the birds and, coupled with concise text, make identification in the wild quick and effortless. Detailed illustrations show typical plumage, comparing juvenile and adult, male and female, and appearance during the winter and summer months. No matter when you want to go birdwatching, American Museum of Natural History: Pocket Birds of North America, Western Region can help you locate where a certain species can be seen throughout the entire year, even during migration season. Created in association with the American Museum of Natural History and produced in a compact and easy-to-use format, American Museum of Natural History: Pocket Birds of North America, Western Region is the perfect field companion for bird enthusiasts of all ages and levels of experience.

How to Know the Birds

How to Know the Birds PDF

Author: Ted Floyd

Publisher:

Published: 2019

Total Pages: 308

ISBN-13: 1426220030

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"In this elegant narrative, celebrated naturalist Ted Floyd guides you through a year of becoming a better birder. Choosing 200 top avian species to teach key lessons, Floyd introduces a new, holistic approach to bird watching and shows how to use the tools of the 21st century to appreciate the natural world we inhabit together whether city, country or suburbs." -- From book jacket.

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