Nesting bird species, number of nests established in both years combined for each of the three principal treatment units, and number of nests per unit area for each unit on the right-of-way on the State Game Lands 33 Research and Demonstration Area, Centre County, Pennsylvania.
| Bird species | Handcut | Low-volume basal | Mowing + herbicide |
|---|---|---|---|
| Indigo bunting | 1 | 8 | 3 |
| Field sparrow | 0 | 6 | 2 |
| Gray catbird | 4 | 2 | 0 |
| Eastern towhee | 1 | 2 | 2 |
| Common yellowthroat | 0 | 1 | 1 |
| Chestnut-sided warbler | 0 | 3 | 0 |
| American robin | 2 | 1 | 0 |
| Red-eyed vireo | 1 | 1 | 0 |
| Cedar waxwing | 0 | 1 | 0 |
| Total number of species | 5 | 9 | 4 |
| Total number of nests | 9 | 25 | 8 |
| Number of nests/ha/yr | 3.8 | 11.4 | 5 |
| Number of nests/ac/yr | 1.5 | 4.6 | 2 |