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Author: W. L. McAtee
Publisher:
ISBN:
Category : Beneficial birds
Languages : en
Pages : 124
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Author: W. L. McAtee
Publisher:
ISBN:
Category : Beneficial birds
Languages : en
Pages : 124
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Author: Louis Agassiz Fuertes
Publisher: Palala Press
ISBN: 9781341488528
Category :
Languages : en
Pages : 126
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Book Description
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author: Waldo Lee Mcatee
Publisher: Forgotten Books
ISBN: 9780266441953
Category : Science
Languages : en
Pages : 126
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Excerpt from Woodpeckers in Relation to Trees and Wood Products Woodpeckers are peculiarly dependent upon trees, which furnish them food, shelter, and cradles for their young. No birds are more highly specialized nor more perfectly adapted to a particular mode of life than are most woodpeckers to arboreal existence. Moreover, as trees are important to woodpeckers, so are these birds important to trees. Woodpeckers benefit trees by consuming many of the most destructive forest pests, insects largely inaccessible to other birds. In securing these insects, however, which constitute the bulk of their food, and in making nests and shelter cavities, woodpeckers have another significant economic relation to trees, for they remove bark and wood from both dead and living trees. In the case of dead trees little or no harm is done. When, however, they make excavations in living trees, the birds destroy more or less of the cambium layer, from which proceeds the growth of both wood and bark. Slight injuries to the cambium result in distorted growth, but the destruction of large areas may cause death. Since trees are exceedingly valuable to man, the habits Of birds whose relations to trees are so vital are Of much economlc Importance. It is the purpose of this bulletin to examine the evidence for and against woodpeckers and to determine their status according to the effect Of their habits upon trees and wood products. Injuries by woodpeckers are treated under two heads: (1) Damage by wood peckers in general; (2) injuries due almost exclusively to the three species properly known as sapsuckers. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: Waldo Lee McAtee
Publisher:
ISBN:
Category : Woodpeckers
Languages : en
Pages : 0
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Author: United States. Bureau of Biological Survey
Publisher:
ISBN:
Category : Zoology, Economic
Languages : en
Pages : 502
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Author: United States. Department of Agriculture
Publisher:
ISBN:
Category : Birds
Languages : en
Pages : 1598
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Author:
Publisher:
ISBN:
Category : Zoology, Economic
Languages : en
Pages : 136
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Author:
Publisher:
ISBN:
Category : Biology
Languages : en
Pages : 626
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Author: Waldo Lee McAtee
Publisher:
ISBN:
Category :
Languages : en
Pages : 558
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Author: United States. Bureau of Biological Survey
Publisher:
ISBN:
Category : Zoology, Economic
Languages : en
Pages : 1004
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