We thank W. C. Barrow, J. Gerwin, G. Graves, J. V. Remsen, S. Somershoe, D. Twedt, and the Birds of North America staff for manuscript reviews and useful comments, and all of the account contributors for providing valuable information. Peter Pyle contributed plumage and molt descriptions in the Appearance article and Michael Patten contributed text for the Systematics article. N. Pieplow assisted in obtaining a recording and helped us decipher vocalizations. L. Kiff of the Western Foundation of Vertebrate Zoology provided data-slips and measurements of eggs in the WFVZ collection. D. Bystrak provided banding and recovery records from the Bird Banding Laboratory. J. Lowe sent records from the Nest Record Program at the Cornell Lab of Ornithology. D. Twedt of the U.S.G.S. Patuxent Wildlife Research Center sent banding records and habitat information. W. Eddleman and W. C. Barrow provided information from their research.
For the revised map, preliminary unpublished Breeding Bird Atlas maps were provided by R. West, Alabama; K. Smith, Arkansas; T. Schneider, Georgia; and R. Bailey, West Virginia. In addition, the following people made helpful comments on the range map: B. Anderson, S. Bailey, J. Buckelew, S. Cardiff, A. Dobson, W. Eddleman, J. Gerwin, G. Graves, P. Hamel, P. Hockey, M. Johns, G. Knight, O. Komar, H. LeGrand, B. MacKinnon-de-Montes, A. McAndrews, S. Miller, D. Muth, J. Neal, K. Nichols, B. Ortego, B. Palmer-Ball, A. Peele, M. Revels, T. Schneider, S. Schutte, C. Shackelford, S. Smalling, S. Stedman, R. West, M. Westphal, T. White, J. Wilson, and N. Winstead.
The following people supplied unpublished data or obscure articles: B. Anderson, K. Arnold, C. Artuso, A. Brunner, M. Case, J. Cely, N. Chartier, K. Dale, J. B. Dunning, L. Eldridge, J. Faaborg, C. Heckscher, E. Heller, K. Klimkiewicz, N. Komar, G. Lasley, G. Luneau, M. Lutmerding, P. Marra, S. Glowinski Matamoros, D. McNair, B. Muschlitz, J. Northern, J. V. Remsen, M. Revels, G. Reynard, C. Robbins, B. Sargent, K. Smith, M. B. Simpson, E. Soehren, A. Stedman, B. Summerour, P. Sykes, R. Walters, R. West, T. White, M. Williams, and G. Williamson.