1. Cornell University Biological Field Station, Department of Natural ResourcesCornell University900 Shackelton Point RoadBridgeportNew York13030USA
2. U.S. Geological Survey, Vermont Cooperative Fish and Wildlife Research Unit, Rubenstein School of Environment and Natural ResourcesUniversity of Vermont81 Carrigan Drive, 302 Aiken CenterBurlingtonVermont05405USA
3. Vermont Department of Fish and Wildlife111 West Street, Essex JunctionVermont05402USA
4. Department of Natural ResourcesCornell UniversityFernow Hall, 226 Mann DriveIthacaNew York14853USA