The final work upon migrations in Washington is still to be done. Our own task has called us hither and yonder each season to such an extent that consecutive work in any one locality has been impossible, and there appears not to be any one in the State who has seriously set himself to record the movements of the birds in chronological order. Success in this line depends upon coöperative work on the part of many widely distributed observers, carried out thru a considerable term of years. It is one of the aims of these volumes to stimulate such endeavor, and the author invites correspondence to the end that such an undertaking may be carried out systematically. In citing authorities, we have aimed to recall the first publication of each species as a bird of Washington, giving in italics the name originally assigned the bird, if different from the one now used, together with the name of the author in bold-face type. In many instances early references are uncertain, chiefly by reason of failure to distinguish between the two States now separated by the Columbia River, but once comprehended under the name Oregon Territory. Such citations are questioned or bracketed, as are all those which omit or disregard scientific names. The abbreviated references are to standard faunal lists appearing in the columns of “The Auk” and elsewhere, and these are noted more carefully under the head of Bibliography, among the Appendices. At the outset I wish to explain the peculiar relation which exists between myself and the junior author, Mr. J. H. Bowles. Each of us had long had in mind the thought of preparing a work upon the birds of Washington; but Mr. Bowles, during my residence in Ohio, was the first to undertake the task, and had a book actually half written when I returned to the scene with friendly overtures. Since my plans were rather more extended than his, and since it was necessary that one of us should devote his entire time to the work, Mr. Bowles, with unbounded generosity, placed the result of his labors at my disposal and declared his willingness to further the enterprise under my leadership in every possible way. Except, therefore, in the case of signed articles from his pen, and in most of the unsigned articles on Grouse and Ducks, where our work has been a strict collaboration, the actual writing of the book has fallen to my lot. In practice, therefore, I have found myself under every degree of indebtedness to Mr. Bowles, according as my own materials were abundant or meager, or as his information or mine was more pertinent in a given case.