We thank the following for providing reprints and unpublished data: R. C. Banks, J. V. Briskie, F. Greeley, H. A. Green, C. A. Haas, B. Kessel, E. Kiviat, B. G. Marcot, J. T. Marshall, K. H. Maslowski, M. K. McNicholl, C. P. Ortega, J. M. N. Smith, D. W. Steadman, R. C. Tweit, and J. D. Tyler. N. T. Wheelwright and T. N. Sexson generously provided bibliographical material. Nest and egg data were provided by L. Kiff of the Western Foundation of Vertebrate Zoology. Information on diseases was provided by L. H. Creekmore of the National Wildlife Health Center. S. L. Gaunt of the Borror Laboratory of Bioacoustics provided the sonogram. An earlier version of this species account was improved by comments from C. Sousa, D. E. Kroodsma, A. F. Poole, K. Russell, and L. Bevier.
ENV thanks A. F. Poole for his guidance and patience, M. Dixon for her help gathering articles, D. Brown and L. Rifai for providing an unpublished manuscript, and P. Eason and H. McCarthy for helpful comments on the manuscript.