Read University of California Publications in Zoology, 1912, Vol. 11 (Classic Reprint) - William Emerson Ritter | ePub Online

Download University of California Publications in Zoology, 1912, Vol. 11 (Classic Reprint) - William Emerson Ritter | ePub

Excerpt from University of California Publications in Zoology, 1912, Vol. 11It is impossible, however, to determine accurately the full value of birds, for we cannot find out what the result would be upon the insect population, if all the birds were suddenly de stroyed. Yet a knowledge of their food leads us to conjecture that the destruction of so important an enemv of

Title : University of California Publications in Zoology, 1912, Vol. 11 (Classic Reprint)
Author : William Emerson Ritter
Language : en
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Uploaded : Apr 03, 2021

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