Excerpt from Handbook of Birds of the Western United States: Including the Great Plains, Great Basin, Pacific Slope, and Lower Rio Grande ValleyIN the Addenda to the Fourth Edition of the Handbook will be found a list of the changes in families and genera made by the No menclature Committee of the American Ornithologists' Union since the publication of the Handbook, descriptions of new species recog nized in the third edition of the check-list of North American Binds (1910) and in the Sixteenth Supplement to the check-list a list of species that should be dropped from the Handbook, either because they have been eliminated from the check-list, rejected by the No menclature Committee, thrown out of the western United States by the subdivision of species, or because the records on which they were included have been found unsatisfactory, and alsoalist of the birds of the western United States in the nomenclature of the 1910 Check List with corrected ranges, together with a list of books of reference published since the first edition of the Handbook.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.