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Endangered and Threatened Species of the Platte River
prairie of the upper Midwest and the eastern aspen parklands of Canada (Allen 1952). It also nested in such disparate regions as the taiga and sub-Arctic regions of the Northwest Territories, where the last remaining population has persisted to present times, and in the coastal marshes of Louisiana (Figure 5-1), where a nonmigratory population bred until 1939 and was extirpated from the wild in 1950 (Gomez 1992; Lewis 1995). Wetland ecosystems historically used by wintering whooping cranes were diverse as
FIGURE 5-1 Historical distribution of whooping cranes in North America. Source: Allen 1952. Reprinted with permission; copyright 1952, National Audubon Society.