At the turn of the 20th century, the Eastern Population (EP) of greater sandhill cranes
(Grus canadensis tabida; hereafter, cranes) was nearly extirpated from its historical
breeding range due to habitat alteration and uncontrolled hunting (Walkinshaw and Wing
1955, Lumsden 1971, Hunt et al. 1976). The EP of sandhill cranes has increased in size
and its breeding range has expanded (Tacha et al. 1994, Amundson and Johnson 2011),
which has been attributed to actions such as habitat conservation by state and federal
agencies and non-government organizations, protection from uncontrolled hunting
following passage of the Migratory Bird Treaty Act of 1916, and prohibition of hunting
in 1918. However, an increase in population size has also been accompanied by
management issues related to crop depredation, an interest in allowing sport harvest, and
creating opportunity for non-consumptive wildlife viewing (Van Horn et al. 2010).
Similar to other sandhill crane populations, basic biological and annual life cycle
information is needed to better manage EP cranes, especially information related to
spatial distribution of the population, current migration patterns, potential overlap with
neighboring migratory and non-migratory populations, and identification of important
habitats during the annual life cycle (D. J. Case and Associates 2009).
Fronczak, David, L..
Distribution, Migration Chronology, and Survival Rates of Eastern Population Sandhill Cranes.
Retrieved from the University of Minnesota Digital Conservancy,
Content distributed via the University of Minnesota's Digital Conservancy may be subject to additional license and use restrictions applied by the depositor.