We are grateful to Peter Pyle, who provided text on plumages and molts for the Appearance article; to Michael Patten, who contributed text for the Systematics article; to Jennifer Walsh, who read draft text and offered advice on genetics of the hybrid zone in New England; and to Katherine J. Ruskin, who provided unpublished data and answered many questions related to the SHARP demographic data. The U.S. Geological Survey, Bird Banding Laboratory at the Patuxent Wildlife Research Center kindly provided information on wintering or migrant encounters outside the breeding range. We also warmly thank the following people who provided information on relevant topics related to particular states (in parentheses), gave permission to use photographs, or supplied other information: S. Apgar, T. Bayard, B. Benvenuti, A. Borowske, N. Brinkley (North Carolina), W. Brown (Virginia), D. Bystrak, L. Cline, M. Correll, C. Field, L. Garey, A. Given, C. Hill, J. Hill, T. P. Hodgman, B. Keeney, B. Klingbeil, A. Kocek, A. Kovach, A. W. Kratter, R. Longenecker, S. Meiman, K. O’Brien (Maine, New Hampshire), B. Olsen, S. Roberts, R. H. Robins, K. Ruskin (Maine), K. Schmidt, W. G. Shriver, A. Spencer, P. Vickery (Maine), B. D. Watts (Virginia), and W. A. Wiest (Delaware, New Jersey).
Unpublished data from SHARP, refers to information collected by members of the Saltmarsh Habitat and Avian Research Program. This program is an umbrella for a cooperative effort by scientists and their students at several universities in the northeastern U.S. to learn more about the ecology and conservation of tidal-marsh bird species along the Atlantic Coast.