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Excerpt from Ornithologist and Oologist, Vol. 15: Birds: Their Nests and Eggs Among the birds themselves local variation has been systematized to a considerable degree by the works of Baird and of Allen, and ao cording to their observations may be divided into two classes, viz.: variation in color and in size. 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.
Excerpt from Ornithologist and Oologist, Vol. 18: Hyde Park, Mass;, January, 1893 The period of incubation is about 4 weeks, but will vary, as some eggs in a nest will hatch in four weeks after the first was laid, while others will come at almost any time after 4 weeks. An egg is laid every other day, or a set of 5 in 10 days. Incubation begins with the first egg laid. Only one brood is raised unless they are disturbed, and then I have known one bird to lay 3 sets of 7 eggs in one nest. 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.