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Evaluation of the Bird Conservation Area Concept in the Northern Tallgrass Prairie Annual Report: 1998

Table 2


TABLE 2. Bird density/100 ha (± SE) in small and large plots in neutral and hostile landscapes, by region.
Species Glyndon Region (south) Crookston region (north)
Small Large Small Large
N=6 N=3 N=5 N=4 N=4 N=5 N=4 N=3
Savanna Sparrow 93.8 ± 24.3 72.4 ± 22.4 98.1 ± 33.6 38.4 ± 4.0 186.1 ± 76.3 75.8 ± 19.9 194.5 ± 18.2 65.5 ± 39.6
Clay-colored Sparrow 57.1 ± 30.3 67.0 ± 39.3 45.1 ± 21.5 74.9 ± 26.0 12.5 ± 4.2 77.8 ± 24.5 28.1 ± 22.3 35.0 ± 6.3
Bobolink male 64.9 ± 20.3 13.5 ± 6.8 122.1 ± 26.7 50.4 ± 17.0 41.7 ± 14.4 5.3 ± 5.3 95.3 ± 19.3 22.2 ± 5.5
Le Conte's Sparrow 20.8 ± 14.6 89.9 ± 28.4 78.2± 27.1 46.1 ± 26.6 54.2 ± 26.7 34.7 ± 22.1 137.5 ± 39.5 50.0 ± 28.9
Bobolink female 41.5 ± 22.3 0 40.5 ± 12.0 13.1 ± 3.3 19.4 ± 4.8 5.3 ± 5.3 56.2 ± 33.5 13.3 ± 13.3
Brown-headed Cowbird male 35.2 ± 16.0 30.6 ± 4.3 10.5 ± 2.4 5.3 ± 1.8 11.1 ± 7.8 9.1 ± 6.5 17.2 ± 3.0 2.8 ± 2.8
Sedge Wren 10.1 ± 5.6 14.8 ± 14.8 10.7 ± 5.7 28.4 ± 22.3 16.7 ± 16.7 12.0 ± 7.4 54.7 ± 21.4 22.2 ± 22.2
Red-winged Blackbird 109.5 ± 25.0 0 12.1 ± 5.1 6.8 ± 2.6 33.3 ± 22.6 0 14.1 ± 6.4 8.3 ±8.3
Common Yellowthroat 29.5 ± 12.2 18.5 ± 9.8 9.0 ± 6.1 12.7 ± 8.8 0 12.0 ± 7.4 3.1 ± 1.8 10.5 ± 3.1
Grasshopper Sparrow 11.1 ± 11.1 48.5 ± 48.5 34.2 ± 16.3 1.7 ± 1.7 0 0 0 5.5 ± 5.6
Song Sparrow 10.0 ± 5.7 17.2 ± 9.6 17.2 ± 9.6 5.8 ± 3.9 8.3 ± 4.8 0 0 5.5 ± 2.8
Eastern Kingbird 7.1 ± 5.5 0 8.9 ± 4.7 8.5 ± 1.7 2.8 ± 2.8 9.1 ± 6.5 1.6 ± 1.6 2.78 ± 2.8
American Goldfinch 1.6 ± 1.6 17.2 ± 9.6 10.2 ± 4.3 7.4 ± 3.4 0 0 6.2 ± 4.4 12.8 ± 2.4
Tree Swallow 0 22.2 ± 22.2 13.7 ± 13.7 7.3 ± 4.3 0 0 4.7 ± 4.7 0
Western Meadowlard 4.6 ± 3.2 0 13.9 ± 4.5 1.6 ± 1.6 2.8 ± 2.8 0 4.7 ± 3.0 0
Brewer's Blackbird 12.5 ± 9.6 0 6.7 ± 6.7 0 15.3 ± 10.5 0 1.6 ± 1.6 30.5 ± 30.6
Yellow Warbler 2.8 ± 2.8 11.1 ± 11.1 6.5 ± 5.1 2.1 ± 2.1 0 0 0 7.8 ± 0.5
Brown-headed Cowbird female 19.6 ± 16.3 0 1.2 ± 1.2 1.6 ± 1.6 0 0 6.2 ± 2.5 0
Upland Sandpiper 1.6 ± 1.6 13.5 ± 6.8 2.9 ± 1.8 0 0 0 1.6 ± 1.6 2.8 ± 2.8
Marbled Godwit 1.6 ± 1.6 0 7.5 ± 4.6 0 2.8 ± 2.8 0 1.6 ± 1.6 0
Common Snipe 2.8 ± 2.8 7.4 ± 7.4 0 0 11.1 ± 3.9 0 4.7 ± 3.0 2.8 ± 2.8
Barn Swallow 2.9 ± 2.9 0 1.3 ± 1.3 7.8 ± 5.9 4.2 ± 4.2 0 4.7 ± 1.6 0
Gray Catbird 0 17.2 ± 9.6 1.2 ± 1.2 2.1 ± 2.1 0 0 0 0
Mallard 1.6 ± 1.6 0 4.6 ± 3.2 0 0 0 1.6 ± 1.6 0
Swamp Sparrow 7.4 ± 5.7 0 0 0 4.2 ± 4.2 0 1.6 ± 1.6 0
Bank Swallow 0 0 5.0 ± 5.0 0 69.4 ± 69.4 0 0 0
Greater Prairie-Chicken 0 0 5.8 ± 3.6 0 0 0 4.7 ± 3.0 0
Marsh Wren 11.2 ± 5.6 0 0 0 0 0 0 2.8 ± 2.8
Blue-winged Teal 11.1 ± 7.0 0 0 0 0 0 0 0
Nelson's Sharp-tailed Sparrow 0 0 0 0 8.3 ± 4.8 0 0 0
Sora 5.7 ± 3.6 0 0 0 0 0 0 0
Killdeer 0 0 0 0 4.2 ± 4.2 0 0 0
Lesser Scaup 2.9 ± 2.9 0 0 0 0 0 0 0
Willow Flycatcher 2.8 ± 2.8 0 0 0 0 0 0 0
Mourning Dove 0 0 1.2 ± 1.2 0 0 0 0 2.8 ± 2.8
Vesper Sparrow 0 0 0 0 0 0 0 2.8 ± 2.8
Chipping Sparrow 0 0 0 0 0 0 0 2.8 ± 2.8
Yellow Rail 0 0 0 0 0 0 2.1 ± 2.1 0
House Wren 0 0 0 2.1 ± 2.1 0 0 0 0
Northern Harrier 0 0 0 0 0 0 1.6 ± 1.6 0
Least Flycatcher 0 0 1.3 ± 1.3 0 0 0 0 0
Henslow's Sparrow 0 0 1.2 ± 1.2 0 0 0 0 0
Brown Thrasher 0 0 1.2 ± 1.2 0 0 0 0 0
Total Number of Species 28 15 28 20 19 9 23 21

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