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The Center for Native Grasslands Management

Military Grasslands Maps

Breeding bird diversity in the eastern US

Breeding species

Species richness of breeding grassland birds in the eastern US by county.  Range maps were compiled from Laughlin and Kibbe 1985, Illinois Department of Natural Resources 1986-1991, Adamus 1987, Andrle and Carroll 1988, Carolina Bird Club 1988-1995, Virginia Society of Ornithology 1989, Brewer et al. 1991, Peterjohn and Rice 1991, Brauning 1992, Enser 1992, Veit and Petersen 1993, Bevier 1994, Buckelew 1994, Foss 1994, Palmer-Ball 1996, Robbins 1996, Nicholson 1997, Castrale et al. 1998, Hess et al. 2000, Wiedenfeld and Swan 2000, Peterjohn 2001, Wisconsin Society for Ornithology 2002, Florida Fish and Wildlife Conservation Commission 2003, Turcotte and Watts 1999, Sauer et al. 2004.


Grasslands in the eastern US (includes hay fields and pasture)

Existing Grassland patches

Proportion of existing large (>40 ha) grassland patches in the eastern US by county.  Darker areas represent higher proportions.  The red dots represent selected Department of Defense installations



Wintering bird diversity in the eastern US

Wintering Species map

Species richness of wintering grassland birds in the eastern US by county.  Range maps were compiled from Christmas Bird Count summary range maps (Audubon Society 1959 – 1988, Root 1988).


Open habitats in the eastern US

Open Habitats map

Proportion of open habitats (e.g., native grasslands, hay-fields, and other agricultural lands) in the eastern US by county.  The open habitats represent potential areas for grassland restoration.  Darker areas represent higher proportions.  The red dots represent selected Department of Defense installations (see table 4 for installation names and identification numbers).