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

Table 6


Table 6.  Percentage of grassland passerine nests that were parasitized by Brown-headed Cowbirds in 2000.  Total numbers of nests are shown in parentheses.
Species Crookston Glyndon Sheyenne Total
% (N) % (N) % (N) % (N)
Red-winged Blackbird 14.3 (7) 0 (4) 23.1 (13) 16.7 (24)
Western Meadowlark 0 (2) 50.0 (2) 11.8 (17) 14.3 (21)
Brewer's Blackbird 11.1 (9) - - 11.1 (9)
Savannah Sparrow 2.3 (129) 4 (25) 29.5 (44) 8.6 (198)
Clay-colored Sparrow 4.8 (21) 1.1 (93) 9.7 (62) 4.5 (176)
Bobolink 0 (19) 5.6 (18) 0 (22) 1.7 (59)
Field Sparrow - - 0 (16) 0 (16)
Grasshopper Sparrow 0 (1) - 0 (8) 0 (9)
Le Conte's Sparrow 0 (4) 0 (4) - 0 (8)
Vesper Sparrow - - 0 (10) 0 (10)
Sedge Wren 0 (6) 0 (1) - 0 (7)
Lark Sparrow - - 0 (3) 0 (3)
Dickcissel - 0 (1) - 0 (1)
Total 3.0 (198) 2.7 (147) 12.8 (187) 6.4 (531)

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