Food of the Woodpeckers of the United States (Classic Reprint)
| Preis: | 11.95 EUR* (inkl. MWST zzgl. Versand - Preis kann jetzt höher sein!) |
| Versand: | 0.00 EUR Versandkostenfrei innerhalb von Deutschland |
| Partner: | buecher.de |
| Hersteller: | Forgotten Books (Beal, F. E. L.) |
| Stand: | 2015-08-04 03:50:33 |
Produktbeschreibung
Excerpt from Food of the Woodpeckers of the United States Sir: I have the honor to transmit herewith for publication as Bulletin No. 37 of the Biological Survey, a report on the Food of the Woodpeckers of the United States, by F. E. L. Beal, assistant, Biological Survey. The diminished supply of timber and its greatly increased cost render the conservation of our remaining forests exceedingly important. It has been estimated that within the United States insects destroy trees and lumber to the value of upward of $100,000,000 annually. As boring insects are the natural enemies of trees, so birds are their natural allies. Of all birds that further the welfare of the forest; woodpeckers are the most important, many of them indeed being specially adapted to dig into wood in order to reach insect larva) safe from all other enemies. While most woodpeckers are thus highly beneficial, the sapsuckers arc injurious, since they subsist to a considerable extent on the cambium or inner bark of trees. This bulletin is meant to serve a practical end by describing the food habits of the several species, and by pointing out the extent to winch each is beneficial or injurious, so that the forester, the farmer, and the orchardist may know friend from foe. 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.
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