A REVIEW OF THE POPULATION ESTIMATION APPROACH OF THE NORTH AMERICAN LANDBIRD CONSERVATION PLAN

'U.S. Geological Survey Upper Midwest Environmental Sciences Center, 2630 Fanta Reed Road, La Crosse, Wisconsin 54603, USA; 2Utah Division of Wildlife Resources, 1594 West North Temple, Suite 2110, P.O. Box 146301, Salt Lake City, Utah 84114, USA; 3Department of Biological Science, Florida State University, Tallahassee, Florida 32306, USA; 4U.S. Geological Survey Northern Prairie Wildlife Research Center, 8711 37th Street SE, Jamestown, North Dakota 58401, USA; 5Canadian Wildlife Service, Migratory Birds Conservation Division, 351 St. Joseph Boulevard, Gatineau, Quebec KlA OH3, Canada; 6U.S. Geological Survey Patuxent Wildlife Research Center, 12100 Beech Forest Road, Laurel, Maryland 20708, USA; and 7U.S. Department of Agriculture Forest Service, North Central Research Station, 202 Natural Resources, University of Missouri, Columbia, Missouri 65211, USA.