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Evaluation of the Bird Conservation Area Concept in the Northern Tallgrass Prairie Annual Report: 2000

Table 2


Table 2.  Mean bird density/100 ha ( standard error) in small and large plots in neutral and hostile landscapes, by region, in 2000.  Species are in taxonomic order.
Species Crookston Glyndon Sheyenne
Small Large Small Large Small Large
Neutral
N=4
Hostile
N=4
Neutral
N=4
Hostile
N=3
Neutral
N=6
Hostile
N=3
Neutral
N=5
Hostile
N=4
Hostile
N=4
Neutral
N=5
Hostile
N=2
Mallard 0 0 0 0 18.2 16.4 0 2.9 ± 1.8 0 0 2.5 ± 1.5 3.6 ± 3.6
Green-winged Teal 0 0 0 0 0 0 0 0 0 2.5 ± 2.5 0
Blue-winged Teal 0 0 0 0 0 0 0 0 0 8.7 ± 5.4 0
Northern Shoveler 0 0 0 0 0 0 0 0 0 1.2 ± 1.2 3.6 ± 3.6
Northern Pintail 0 0 0 0 0 0 0 0 0 1.2 ± 1.2 0
Wood Duck 0 0 0 0 2.9 ± 2.9 0 0 0 0 0 0
Sora 0 0 0 0 2.4 + 2.4 0 0 0 0 0 0
Marbled Godwit 4.2 ± 4.2 0 1.6 ± 1.6 0 0 0 4.2 ± 1.7 0 0 5.0 ± 2.3 0
Wilson's Phalarope 0 0 0 0 0 0 0 0 0 11.2 ± 6.1 0
Killdeer 0 0 1.6 ± 1.6 0 2.9 ± 2.9 0 0 0 0 2.5 ± 1.5 3.6 ± 3.6
Common Snipe 6.9 ± 4.2 6.7 ± 6.7 7.8 ± 1.6 2.2 ± 2.2 2.9 ± 2.9 0 1.2 ± 1.2 0 0 1.2 ± 1.2 14.0 ± 0.2
Upland Sandpiper 2.8 ± 2.8 0 3.1 ± 1.8 2.2 ± 2.2 0 0 2.5 ± 1.5 0 0 1.2 ± 1.2 6.9 ± 6.9
Red-tailed Hawk 0 8.3 ± 8.3 0 0 0 0 0 0 0 0 0
Northern Harrier 4.2 ± 4.2 0 0 0 1.6 ± 1.6 0 4.2 ± 1.7 3.2 ± 1.8 0 0 0
American Kestrel 0 0 0 0 0 0 1.2 ± 1.2 1.6 ± 1.6 0 0 0
Short-eared Owl 0 0 1.6 ± 1.6 0 1.6 ± 1.6 0 2.5 ± 1.5 0 0 0 0
Greater Prairie-Chicken 0 0 9.4 ± 7.4 0 0 0 2.9 ± 1.8 0 0 1.2 ± 1.2 3.4 ± 3.4
Morning Dove 0 0 0 0 0 0 0 0 0 1.2 ± 1.2 0
Northern Flicker 4.2 ± 4.2 0 0 0 0 0 0 0 0 0 0
Eastern Kingbird 4.2 ± 4.2 0 1.6 ± 1.6 7.7 ± 0.5 4.8 ± 4.8 18.5 ± 9.8 2.6 ± 1.6 3.6 ± 2.1 19.6 ± 7.9 3.7 ± 2.5 10.6 ± 3.7
Willow Flycatcher 0 2.9 ± 2.9 0 0 0 0 0 0 0 0 0
Alder Flycatcher 0 0 0 0 0 0 1.3 ± 1.3 0 0 0 0
Bank Swallow 0 0 0 0 0 0 0 7.8 ± 7.8 0 0 0
Barn Swallow 0 3.0 ± 3.0 1.6 ± 1.6 0 2.0 ± 2.0 6.1 ± 6.1 3.8 ± 1.6 2.1 ± 2.1 18.2 ± 18.2 12.5 ± 6.6 3.6 ± 3.6
Tree Swallow 0 0 0 0 5.3 ± 3.4 28.3 ± 19.9 18.7 ± 10.5 4.7 ± 4.7 0 0 10.3 ± 10.3
American Crow 0 0 0 0 0 0 0 0 7.1 ± 7.1 0 0
Marsh Wren 0 0 0 5.3 ± 5.3 17.6 ± 7.2 0 0 0 0 1.2 + 1.2 0
Sedge Wren 30.6 ± 17.8 8.6 ± 8.6 56.2 ± 28.1 26.0 ± 13.9 5.5 ± 3.9 14.8 ± 14.8 11.3 ± 5.7 17.2 ± 11.8 0 5.0 ± 5.0 6.9 ± 6.9
House Wren 0 0 0 0 0 11.1 + 11.1 0 2.1 + 2.1 0 0 0
American Robin 0 0 0 0 0 0 0.6 ± 0.6 0 0 0 0
Gray Catbird 0 0 0 2.2 ± 2.2 0 0 1.3 ± 1.3 1.6 ± 1.6 0 0 3.6 ± 3.6
Warbling Vireo 0 0 0 0 0 0 0 0 9.1 ± 9.1 0 3.6 ± 3.6
Yellow Warbler 0 0 0 5.6 ± 5.6 5.3 ± 3.4 17.2 ± 9.6 7.8 ± 5.3 2.1 ± 2.1 0 0 3.6 ± 3.6
Common Yellowthroat 8.3 ± 4.8 6.7 ± 6.7 7.8 ± 4.7 9.9 ± 1.7 26.5 ± 9.4 13.5 ± 6.8 16.7 ± 7.7 18.8 ± 9.8 6.9 ± 6.9 2.5 ± 2.5 10.7 ± 10.7
Grasshopper Sparrow 0 15.1 ± 15.1 3.1 ± 1.8 0 11.1 ± 11.1 0 37.2 ± 15.8 0 48.9 ± 30.2 67.5 ± 21.4 59.7 ± 4.6
Le Conte's Sparrow 55.6 ± 26.1 65.9 ± 31.8 107.8 ± 29.1 79.4 ± 39.9 19.5 ± 8.6 52.5 ± 27.2 76.4 ± 24.4 19.5 ± 7.1 0 31.2 ± 8.8 24.7 ± 11.0
Vesper Sparrow 0 0 0 2.7 ± 2.7 0 0 0 0 17.7 ± 13.5 0 3.6 ± 3.6
Savannah Sparrow 162.5 ± 34.9 73.5 ± 10.5 173.4 ± 5.3 86.8 ± 11.0 91.1 ± 25.8 46.5 ± 23.3 104.0 ± 36.8 34.2 ± 12.0 0 101.2 ± 18.0 63.8 ± 36.2
Song Sparrow 0 0 0 0 12.9 ± 6.8 17.2 ± 9.6 1.3 ± 1.3 13.7 ± 5.2 0 0 3.6 ± 3.6
Field Sparrow 0 0 0 0 0 0 0 0 10.5 ± 6.6 0 0
Clay-colored Sparrow 20.8 ± 8.0 52.9 ± 10.5 34.4 ± 14.5 58.3 ± 32.8 53.9 ± 15.9 76.1 ± 6.6 38.5 ± 17.3 76.2 ± 27.8 87.1 ± 30.6 10.0 ± 8.5 46.3 ± 39.4
Swamp Sparrow 8.3 ± 8.3 0 0 0 10.8 ± 5.5 0 0 0 0 0 0
Nelson's Sharp-tailed Sparrow 0 0 1.6 ± 1.6 0 0 0 0 0 0 0 0
Bobolink male 22.2 ± 15.7 3.0 ± 3.0 51.6 ± 6.4 27.4 ± 3.0 73.0 ± 14.6 39.1 ± 21.2 40.6 ± 3.4 26.0 ± 14.8 47.1 ± 31.5 60.0 ± 23.2 10.2 ± 1.2
Western Meadowlark 6.9 ± 4.2 3.0 ± 3.0 10.9 ± 3.0 0 3.5 ± 2.3 0 9.7 ± 2.1 1.6 ± 1.6 16.1 ± 7.5 31.2 ± 3.9 24.7 ± 11.0
Red-winged Blackbird 15.3 ± 6.9 0 10.9 ± 5.3 5.3 ± 5.3 81.3 ± 20.1 0 16.2 ± 9.6 0 0 41.2 ± 18.1 53.1 ± 25.5
Yellow-headed Blackbird 0 0 0 0 0 0 0 0 0 5.0 ± 5.0 0
Brewer's Blackbird 12.5 ± 12.5 0 3.1 ± 3.1 0 0 0 0 0 0 0 0
Brown-headed Cowbird  female 8.3 ± 8.3 0 3.1 ± 3.1 0 2.9 ± 2.9 11.1 ± 11.1 0 1.6 ± 1.6 9.1 ± 9.1 18.7 ± 6.2 21.3 ± 14.4
Brown-headed Cowbird  male 5.6 ± 5.6 0 4.7 ± 4.7 2.2 ± 2.2 6.9 ± 3.2 11.1 ± 11.1 8.2 ± 3.3 3.3 ± 3.3 9.1 ± 9.1 22.5 ± 6.1 21.3 ± 14.4
Common Grackle 0 0 0 0 0 0 0 0 0 2.5 ± 1.5 17.9 ± 17.9
Northern Oriole 0 0 0 0 0 0 0 0 0 0 3.6 ± 3.6
American Goldfinch 0 12.7 ± 7.4 0 0

9.5 ± 5.4

29.6 ± 19.6 3.9 ± 2.6 0 16.2 ± 9.5 0 10.7 ± 10.7
Total number of species 19 13 22 16 27 16 28 20 15 29 29

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