Use of wire zones versus border zones by all bird species combined in each of five treatment units on the Green Lane Research and Demonstration Area during springs and summers of 2001 and 2002 combined. Use is based on the percentage of the total number of observations (actual number of observations in parentheses) in a given unit. Treatment units: M = mowing, F = foliage spray, MH = mowing plus herbicide, SF = stem–foliage spray, and HC = handcutting. The amount of area in the border zone of each treatment unit is approximately equal to that of the wire zone.
| Treatment unit | ||||||
|---|---|---|---|---|---|---|
| Zone | M | F | MH | SF | HC | Total |
| Wire | 12% (28) | 34% (67) | 12% (27) | 25% (57) | 27% (47) | 21% (226) |
| Border | 88% (202) | 66% (130) | 88% (200) | 75% (173) | 73% (57) | 79% (833) |