ACKNOWLEDGMENTS 



We thank Clint McCarthy for his help throughout the study and his comments on an earlier 

 version of this report. Additional help was provided by Jim Farrell of the Sioux District and the 

 South Dakota Natural Heritage Program. D. M. Becker generously shared his unpublished nest 

 records for the Montana units of the Sioux District. D. D. Dover, C. Jones, K. Jurist, and S. 

 Thweatt assisted with element occurrence and map preparation. Financial support for the project 

 came from the Custer National Forest (U.S. Forest Service, Northern Region) and the Montana 

 Natural Heritage Program (Montana State Library, Natural Resources Information System and 

 The Nature Conservancy). 



