Numerous colleagues have provide assistance with R packages they created or with code they have provided in some other form. We would be remiss if we failed to thank these colleagues for their hard work:

Sharon Baruch-Mordo, The Nature Conservancy, Fort Collins, CO 80524 ; sbaruch-mordo@tnc.org

Simon Benhamou, Centre d'Ecologie Fonctionnelle et Evolutive, France

Clément Calenge, Data Analysis Support Unit, Directorate for Studies and Research, National Office of Hunting and Wild Fauna, Saint Benoist - 78610 Auffargis, France

Mevin Hooten, Colorado Cooperative Fish and Wildlife Research Unit, 201 Wagar Bldg, Colorado State University, Fort Collins, CO 8052 ; Mevin.Hooten@colostate.edu

Bill Kanapaux, Pennsylvania Cooperative Fish and Wildlife Research Unit, 406 Forest Resources Bldg., Pennyslvania State University, University Park, PA 16802 ; wjk15@psu.edu

Bart Kranstauber, Max Planck Institute for Ornithology, Eberhard-Gwinner-Str., 82319 Seewiesen; bart.kranstauber@uni-konstanz.de

Ryan Nielsen, West Inc.,415 W. 17th St. Suite 200, Cheyenne, WY 82001 ; rnielson@westinc.com

Glen Sargeant, Northern Prairie Wildlife Research Center, Jamestown, North Dakota; glen_sargeant@usgs.gov

Peter Singleton, USDA Forest Service, Pacific Northwest Research Station in Wenatchee, WA; singlep@u.washington.edu

Marcó Smolla, Max Planck Institute for Ornithology, Dept. Migration and Immuno-ecology, Am Obstberg 1, 78315 Radolfzell, Germany; msmolla@orn.mpg.de

Tyler Wagner, US Geological Survey, Pennsylvania Cooperative Fish and Wildlife Research Unit, 402 Forest Resources Bldg., Pennyslvania State University, University Park, PA 16802; twagner@psu.edu