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Contributions of the Conservation Reserve Program to Populations of Breeding Birds in North Dakota

Table 3


Estimated Number of Breeding Pairs (1000's) of Birds in CRP Fields in North Dakota, Estimated Number if CRP were Cropland, Predicted Change in Breeding Pairs, Statewide Number of Breeding Pairs, and Predicted Change as Percentage of Statewide Population, Mean Values for 1992-1993

Species
Population in
Change
Statewide
population
Percent
change
CRP Crop
Lark Bunting 210.9 21.2 -189.7 1113.4 -17.0
Grasshopper Sparrow 205.7 12.4 -193.4 945.2 -20.5
Red-winged Blackbird 187.3 17.8 -169.5 1420.9 -11.9
Savannah Sparrow 93.8 10.2 -83.6 445.2 -18.8
Western Meadowlark 80.1 15.8 -64.4 1260.2 -5.1
Brown-headed Cowbird 70.2 17.1 -53.1 663.7 -8.0
Bobolink 72.8 31.2 -41.6 387.9 10.7
Clay-colored Sparrow 54.30 0.3 -54.0 592.9 -9.1
Common Yellowthroat 27.0 0.3 -26.7 285.8 -9.3
Horned Lark 20.1 316.2 296.1 3041.8 9.7
Mourning Dove 17.6 21.6 4.0 737.1 0.5
Sedge Wren 15.8 0.0 -15.8 61.4 -25.8
Vesper Sparrow 15.0 30.2 15.2 661.4 2.3
Baird's Sparrow 10.4 2.3 -8.0 224.7 -3.6
Dickcissel 10.1 1.2 -8.9 52.0 -17.1
Upland Sandpiper 4.2 10.1 5.9 217.2 2.7
Chestnut-collared Longspur 3.1 22.3 19.1 1529.0 1.3
Killdeer 0.8 14.5 13.7 279.8 4.9


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