Original Account (1999)
We appreciate correspondence from A. Archuleta, J. Arvin, J. Bednarz, K. Bryan, W. Davis, J. Donaldson, D. Fischer, H. Green, J. Grzybowski, K. Jepson-Innes, K. Klimkiewicz (Bird Banding Lab), M. Lockwood, J. Lowe (Cornell Lab of Ornithology), J. Loyd, B. Maurer, J. McMahon, J. Ortega, R. Rasmussen, K. Rosenberg, S. Russell, S. Schwartz, K. Seyffert, J. Sterling, T. Strong, V. Truan, E. Webb, S. Williams, J. Witzeman, and B. Zimmer. We thank personnel of the Borror Laboratory of Bioacoustics collection for help with sonogram, Cornell Nest Record Card Program, U.S.G.S. Bird Banding Laboratory for banding information, and the National Museum of Natural History (J. Dean, C. Dove, S. Olsen) for help with literature and checking museum specimens. E. Willoughby provided advice on molts and plumages. Unpublished breeding bird atlas data was provided for Kansas by W. Busby, Kansas Biological Survey, and for Texas by K. Benson, Texas A&M University. J. Grzybowski and the BNA editors provided thorough reviews.
Revised Account (2018)
Peter Pyle contributed plumage and molt descriptions in the Appearance article and Michael Patten contributed text to the Systematics article. Andrew Spencer reviewed Sounds and Vocal Behavior content.