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Bird Use and Nesting in Conventional,
Minimum-tillage, and Organic Cropland

Table 1


Table 1: The percent frequency of species that occurred on ≤5% of ≤1 seasonal surveys and the total number of individuals recorded in cropland fields during spring, summer, fall, and winter in southeast North Dakota, 1991-93.
Species Spring Summer Fall Winter
% Freq. Total % Freq. Total % Freq. Total % Freq. Total
Sharp-tailed grouse 2 13 <1 19 5 327 9 173
Gray partridge 4 40 1 69 5 517 14 201
Ring-necked peasant 0 0 0 1 2 346 10 357
Killdeer 3 24 6 373 2 146 0 0
Mourning dove <1 2 5 388 18 471 0 0
Horned lark 66 712 30 1,939 25 991 38 886
Brown-headed cowbird 0 0 7 939 0 0 0 0
Yellow-headed blackbird 0 0 2 757 <1 93 0 0
Red-winged blackbird 3 277 7 1,104 6 7,534 0 0
Western meadowlark 3 15 2 124 7 166 0 0
Snow bunting <1 1 0 0 2 262 15 367
Lapland longspur 8 1,997 1 965 2 172 10 575
Chestnut-coll. longspur 8 1,049 2 165 2 31 0 0
Vesper sparrow 0 0 10 582 11 260 0 0
Grasshopper sparrow <1 1 5 240 5 58 0 0
Other species 3 53 22 1,775 9 795 4 92
Totals 100 4,184 100 9,440 100 12,169 100 2,651


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