|
Table 3.
Temporal comparisons of percent composition of males surveyed in belt
transects on CRP fields, by grazing treatments during previous (1992-1993:
Kennedy 1994) and current (2001-2002) research periods at the Central
Grasslands Research Extension Center, Streeter, ND.
|
||||||
|
Grazing Treatment |
||||||
|
Rotation Grazing |
Season Long |
Idle |
||||
| Species | Previous | Current | Previous | Current | Previous | Current |
|
Savannah Sparrow Bobolink Grasshopper Sparrow Clay-colored Sparrow Red-winged Blackbird Brown-headed Cowbird Western Meadowlark Eastern Kingbird Western Kingbird Lark Bunting Common Yellowthroat Sedge Wren Yellow-headed Blackbird |
12.4 8.1 51.3 0.0 5.0 8.4 12.1 0.0 0.0 1.7 0.3 0.0 0.7 |
23.5 25.0 17.4 20.5 8.8 1.5 0.0 1.5 0.0 0.0 0.0 0.0 0.0 |
11.5 15.8 44.6 0.7 7.2 13.8 6.5 0.0 0.0 0.0 0.0 0.0 0.0 |
37.9 10.3 34.4 13.8 0.0 0.0 3.4 0.0 0.0 0.0 0.0 0.0 0.0 |
1.1 33.7 55.1 1.1 1.1 0.0 0.0 0.0 0.0 4.5 0.0 3.4 0.0 |
37.9 34.5 13.9 10.3 0.0 0.0 0.0 0.0 3.4 0.0 0.0 0.0 0.0 |