Maps of Distribution and Abundance of Selected Species of Birds on Uncultivated Native Upland Grasslands and Shrubsteppe in the Northern Great Plains

Figures

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Figure 1. Outline of northern Great Plains study area. Inset shows position of study area on North American continent. Study area boundaries are as follows: north--border between United States and Canada; east--eastern edge of Missouri Coteau (modified slightly from Fenneman 1931); south--Keya Paha River, Niobrara River, Nebraska Sandhills, and South Platte River; west--western edge of Great Plains as mapped by Aandahl (1972). Areas (in black) within study area were not sampled (see text).

Figure 2. Location of soils (adapted from Aandahl 1972) and sample plots. Some dots represent more than one plot. Soils coded as follows: TB-typic borolls; TU-typic ustolls; AB-aridic borolls; AU-aridic ustolls; BA-borollic aridisols; US-ustic aridisols.

 

Figure 3. Quarter section sample plot showing transect route (heavy line). Shaded area censused = 31.5 ha.

 

Figure 4. Breeding distribution of long-billed curlew (Numenius americanus) on native grassland and shrubsteppe in the United States portion of the northern Great Plains.

 

Figure 5. Breeding distribution of upland sandpiper (Bartramia longicauda) on native grassland and shrubsteppe in the United States portion of the northern Great Plains.

 

Figure 6. Breeding distribution of horned lark (Eremophila alpestris) on native grassland and shrubsteppe in the United States portion of the northern Great Plains.

 

Figure 7. Breeding distribution of sage thrasher (Oreoscoptes montanus) on native grassland and shrubsteppe in the United States portion of the northern Great Plains.

 

Figure 8. Breeding distribution of Sprague's pipit (Anthus spragueii) on native grassland and shrubsteppe in the United States portion of the northern Great Plains.

 

Figure 9. Breeding distribution of common yellowthroat (Geothlypis trichas) on native grassland and shrubsteppe in the United States portion of the northern Great Plains.

 

Figure 10. Breeding distribution of bobolink (Dolichonyx oryzivorus) on native grassland and shrubsteppe in the United States portion of the northern Great Plains.

 

Figure 11. Breeding distribution of western meadowlark (Sturnella neglecta) on native grassland and shrubsteppe in the United States portion of the northern Great Plains.

 

Figure 12. Breeding distribution of red-winged blackbird (Agelaius phoeniceus) on native grassland and shrubsteppe in the United States portion of the northern Great Plains.

 

Figure 13. Breeding distribution of Brewer's blackbird (Euphagus cyanocephalus) on native grassland and shrubsteppe in the United States portion of the northern Great Plains.

 

Figure 14. Breeding distribution of brown-headed cowbird (Molothrus ater) on native grassland and shrubsteppe in the United States portion of the northern Great Plains.

 

Figure 15. Breeding distribution of lark bunting (Calamospiza melanocorys) on native grassland and shrubsteppe in the United States portion of the northern Great Plains.

 

Figure 16. Breeding distribution of savannah sparrow (Passerculus sandwichensis) on native grassland and shrubsteppe in the United States portion of the northern Great Plains.

 

Figure 17. Breeding distribution of grasshopper sparrow (Ammodramus savannarum) on native grassland and shrubsteppe in the United States portion of the northern Great Plains.

 

Figure 18. Breeding distribution of Baird's sparrow (Ammodramus bairdii) on native grassland and shrubsteppe in the United States portion of the northern Great Plains.

 

Figure 19. Breeding distribution of vesper sparrow (Pooecetes gramineus) on native grassland and shrubsteppe in the United States portion of the northern Great Plains.

 

Figure 20. Breeding distribution of clay-colored sparrow (Spizella pallida) on native grassland and shrubsteppe in the United States portion of the northern Great Plains.

 

Figure 21. Breeding distribution of Brewer's sparrow (Spizella breweri) on native grassland and shrubsteppe in the United States portion of the northern Great Plains.

Figure 22 Breeding distribution of McCown's longspur (Calcarius mccownii) native grassland and shrubsteppe in the United States portion of the northern Great Plains.

 

Figure 23. Breeding distribution of chestnut-collared longspur (Calcarius ornatus) on native grassland and shrubsteppe in the United States portion of the northern Great Plains.

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