Reel, S., L. Schassberger , and W. Ruediger. 1989. Caring for our 

 natural community: Region 1 - Threatened, Endangered & 

 Sensitive Species Program. USDA, For. Serv. N. Region, 

 Missoula,- MT. 309 pp. + appendices 



Rodrick, E. and R. Milner. 1991. Management recommendations for 

 Washington's priority habitats and species. Wash. Dept. Wildl., 

 Olympia. 



U.S. Department of Interior. 1991. Endangered and Threatened 

 Wildlife and Plants; Animal Candidate Review for Listing as 

 Endangered or Threatened Species, Notice of Review. Federal 

 Register 56 (225) : 58804-58836. 



Wallen, R.L. 1987. Habitat utilization by harlequin ducks in 

 Grand Teton National Park. Unpubl. M.S. Thesis, Mont. State 

 Univ. , Bozeman. 67 pp. 



19 



