A Comprehensive Review of Observational and Site Evaluation Data of Migrant Whooping Cranes in the United States, 1943-99

Listing of Figures

List of Figures

Figure 1 -- Whooping crane sightings in the North Dakota-Texas flyway in spring and fall, 1943-99.
Figure 2 -- Spring sightings of whooping cranes in the North Dakota-Texas flyway, by social group, 1943-99.
Figure 3 -- Fall sighting of whooping cranes in the North Dakota-Texas flyway, by social group, 1943-99.
Figure 4 -- Whooping crane sightings in the North Dakota-Texas flyway in spring and fall, 1943-74.
Figure 5 -- Whooping crane sightings in the North Dakota-Texas flyway in spring and fall, 1975-83.
Figure 6 -- Whooping crane sightings in the North Dakota-Texas flyway in spring and fall, 1984-91.
Figure 7 -- Whooping crane sightings in the North Dakota-Texas flyway in spring and fall, 1992-99.
Figure 8 -- Dates of occurrence of whooping cranes in spring and fall, by state, all observations, 1943-99.
Figure 9 -- Frequency of crane group sizes (total number of cranes per observation) for spring and fall, 1943-99.
Figure 10 -- Percent of observations occurring in 6 categories of social groups, by site use and season, 1977-99.
Figure 11 -- Percent of observations occurring in 6 categories of social groups for palustrine, riverine, and lacustrine systems and upland sites, by site use and season, 1977-99.
Figure 12 -- Percent of wetland sites defined as palustrine, riverine, or lacustrine, by season and site use, 1977-99.
Figure 13 -- Percent of wetland sites defined as palustrine, riverine, or lacustrine, by season and site use, 1977-99, comparing Nebraska with all other states.
Figure 14 -- Percent of wetland sites defined as having permanent, semipermanent, seasonal, or temporary water regimes, by site use and season, 1977-99.
Figure 15 -- Percent of wetland sites occurring in 6 size classes of wetlands, by site use and season, 1977-99.
Figure 16 -- Percent of wetland sites occurring in 6 size classes of wetlands, by site use and season, 1977-99, when records from Quivira NWR, Salt Plains NWR, Cheyenne Bottoms SWA, and Funk Lagoon WPA are excluded.
Figure 17 -- Percent of wetland observations for 6 social group categories occurring in 6 size classes of wetlands, by site use and season, 1977-99.
Figure 18 -- Percent of wetland sites defined as clear, turbid, or saline, by site use and wetland system, 1977-99.
Figure 19 -- Percent of wetland sites occurring in 4 categories describing the distribution pattern of emergent vegetation, by site use and wetland system, 1977-99.
Figure 20 -- Percent of observations for feeding and dual-use sites, described as seasonal wetland, permanent wetland, cropland, or upland cover, by site use and season, 1977-99.
Figure 21 -- Percent of sites, within 1.6 km of feeding or dual-use sites, described as seasonal wetland, permanent wetland, cropland, or upland cover, by site use, 1977-99.
Figure 22 -- Percent of observations for 6 categories of social groups occurring within each type of feeding habitat, by site use, 1977-99.
Figure 23 -- Percent of cropland types occurring on feeding and dual-use sites, by season, 1977-99.
Figure 24 -- Percent of adjacent habitat described as seasonal wetland, permanent wetland, cropland, or upland cover for palustrine and riverine roost sites, 1977-99.
Figure 25 -- Percent of cropland types occurring within 1.6 km of feeding and dual-use sites, by season, 1977-99.
Figure 26 -- Percent of roost and dual-use sites that were <0.40, 0.40-0.79, 0.80-1.19, 1.20-1.61, and >1.61 km from feeding sites, by site use, 1977-99.
Figure 27 -- Percent of sites having visibility to <91 m, 91-401 m, 402-805 m, and >805 m, by site use and wetland system or upland site, 1977-99.
Figure 28 -- Percent of sites in private, federal, state, or other ownership, by season and site use, 1977-99.
Figure 29 -- Percent of sites considered secure, threatened, or of unknown security that were under private (P), federal (F), state (S), or other (O) ownership, 1977-99.

List of Figures in State Summaries

Figure 1 -- Distribution of whooping crane observations in spring and fall, 1943-99, with county boundaries.
Figure 2 -- Distribution of whooping crane observations in spring, by social groups, 1943-99, with ecoregions and rivers.
Figure 3 -- Distribution of whooping crane observations in fall, by social groups, 1943-99, with ecoregions and rivers.
Figure 4 -- Distribution of whooping crane observations for areas of specific interest (select states), 1943-99.
Figure 5 -- Dates of occurrence in spring and fall, 5-year periods, 1943-99.

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