196. Life Histories of North American Thrushes, Kinglets, and Their Allies, June 28, 1949.
197. Life Histories of North American Wagtails, Shrikes, Vireos, and Their Allies, June 21, 1950.
The paragraphs on distribution for the Colima and Kirtland’s warblers were supplied by Dr. Josselyn Van Tyne with his contributions on these species.
All other data on distribution and migration were contributed by the Fish and Wildlife Service under the supervision of Frederick C. Lincoln.
The same general plan has been followed as explained in previous bulletins, and the same sources of information have been used. It does not seem necessary to explain the plan again here. The nomenclature of the Check-List of North American Birds (1931), with its supplements, of the American Ornithologists’ Union, has been followed. Forms not recognized in this list have not been included.
Many who have contributed material for previous Bulletins have continued to cooperate. Receipts of material from several hundred contributors has been acknowledged in previous Bulletins. In addition to these, our thanks are due to the following new contributors: G. A. Ammann, O. L. Austin, Jr., F. S. Barkalow, Jr., Ralph Beebe, H. E. Bennett, A. J. Berger, Virgilio Biaggi, Jr., C. H. Blake, Don Bleitz, B. J. Blincoe, L. C. Brecher, Jeanne Broley, Maurice Broun, J. H. Buckalew, I. W. Burr, N. K. Carpenter, May T. Cooke, H. L. Crockett, Grace Crowe, Ruby Curry, J. V. Dennis, E. von S. Dingle, M. S. Dunlap, J. J. Elliott, A. H. Fast, Edith K. Frey, J. E. Galley, J. H. Gerard, Lydia Getell, H. B. Goldstein, Alan Gordon, L. I. Grinnell, Horace Groskin, F. G. Gross, G. W. Gullion, E. M. Hall, R. H. Hansman, Katharine C. Harding, H. H. Harrison, J. W. Hopkins, N. L. Huff, Verna R. Johnston, Malcolm Jollie, R. S. Judd, M. B. Land, Louise de K. Lawrence, R. E. Lawrence, G. H. Lowery, J. M. Markle, C. R. Mason, D. L. McKinley, R. J. Middleton, Lyle Miller, A. H. Morgan, R. H. Myers, W. H. Nicholson, F. H. Orcutt, H. L. Orians, R. A. O’Reilly, A. A. Outram, G. H. Parks, K. C. Parkes, M. M. Peet, J. L. Peters, F. A. Pitelka, Mariana Roach, James Rooney, Jr., O. M. Root, G. B. Saunders, James Sawders, Mary C. Shaub, Dorothy E. Snyder, Doris Heustis Speirs, E. A. Stoner, P. B. Street, H. R. Sweet, E. W. Teale, A. B. Williams, G. G. Williams, R. B. Williams, Mrs. T. E. Winford, and A. M. Woodbury.
As the demand for these Bulletins is much greater than the supply, the names of those who have not contributed to the work during recent years will be dropped from the author’s mailing list.
Dr. Winsor M. Tyler has again read and indexed for this volume a large part of the current literature on North American birds and has contributed four complete life histories. Dr. Alfred O. Gross has written stories on the yellow-throats (Geothlypis trichas) and has contributed three other complete life histories. Edward von S. Dingle, Alexander Sprunt, Jr., and Dr. Josselyn Van Tyne have contributed two complete life histories each.