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Wallace Jobman, biologist with the Grand Island, Nebraska Office of the U.S. Fish and Wildlife Service, was the primary individual responsible for the long-term development, coordination, and maintenance of these data sets. We commend Mr. Jobman for his dedication and careful work over the years, and we are very grateful for his assistance during this effort. We thank David Carlson (U.S. Fish and Wildlife Service-Grand Island), Michael Fritz (Nebraska Game and Parks Commission), and Kevin Church (University of Nebraska-Lincoln) for their support and for providing funding to summarize these data. Diane Granfors conducted much of the early data-proofing and developed the Access database, tables, and queries. Tom Sklebar (Northern Prairie Wildlife Research Center), and Scott Taylor (Nebraska Game and Parks Commission) provided computer and software assistance. Mele Koneya (GIS specialist at Nebraska Game and Parks) also provided valuable assistance. John Dinan (Nebraska Game and Parks Commission); Craig Davis (Platte River Whooping Crane Maintenance Trust); Thomas Stehn (U.S. Fish and Wildlife Service), and Larry Igl (Northern Prairie Wildlife Research Center) provided comments on an earlier draft of this report. Paul Johnsgard generously provided line drawings for this report. Finally, and most importantly, we thank the many biologists across the flyway who contributed to these data over the years.