Acknowledgments

Thanks to the U.S. Bureau of Reclamation, Yuma Projects Office, and U.S. Fish and Wildlife Service Region 4 for funding our research on Clapper Rails. Thanks to those who assisted with fieldwork on the Clapper Rail in Arizona, including Allen D. Broussard (deceased), Andrea O. Cerovski, Rita D. Dixon, Craig R. Ensley, Ronald E. Flores, Louis R. Hanebury, Sarah T. Hooper, Michael J. Johnson, Rex R. Johnson, Nancy Langston, Jennifer L. Plympton, Vincent J. Semonsen, and Barbara A. Ver Steeg. Kimberly M. Berman assisted with literature searches. We thank Clark Sumida and the staff at the Western Foundation of Vertebrate Zoology for supplying detailed egg measurements and nest record data; the Cornell Laboratory of Ornithology’s Bird Population Studies Program also provided nest record data. Sound spectrograms were prepared by the Borror Laboratory of Bioacoustics at Ohio State University; we thank Sandra L. L. Gaunt for assistance. Thanks to Alan F. Poole, Donald E. Kroodsma, Louis Bevier, Richard C. Banks, Storrs L. Olson, and Keith Russell for helpful comments that improved the manuscript and for providing additional references. We dedicate this account to Allen D. Broussard, a dedicated researcher whose time among us was much too short.