21 

 LITERATURE CITED 



Carlson, J. 1991. Results of boreal owl ( Aegolius funereus) 

 surveys on the Jefferson Division of the Lewis and Clark 

 National Forest. Montana Natural Heritage Program, Helena, 

 Montana. 3 3pp. 



Fuller, M.R. and J. A. Mosher. 1981. Methods for detecting and 

 counting .raptors: a review. Pages 235-246 in C.J. Ralph and 

 J. Scott (eds) ; Estimating the numbers of terrestrial birds. 

 Stud. Avian Biol. 6. 



Hayward, G. 1989. Boreal owl habitat relationships: A report to 

 Region 1, U.S. Forest Service. 30pp. 



Holt, D. and D. Ermatinger. 1989. First confirmed nest site of 

 boreal owls in Montana. Northwestern Naturalist 70:27-31. 



Howie, R. and R. Ritcey. 1987. distribution, habitat selection, 

 and densities of flammulated owls in British Columbia. 

 Pages 249-254 in Biology and conservation of northern forest 

 owls: symposium proceedings. U.S. Dept. Agric.,For. Serv. 

 Gen. Tech. Rep. RM-14 2. 



