LITERATURE CITED 



American Ornithologists Union. 1983- The checklist of North American 

 Birds, 6th Edition. 877 PP- 



Clark, R.J., D.G. Smith, and L. Kelso. 1987 . Distributional status and 

 literature of northern forest owls, pages 47~55- In '• R.W. Nero, 

 R.J. Clark, R.J. Knapton, and R.H. Hamre, eds. Biology and conser- 

 vation of northern forest owls: symposium proceedings. Gen. Tech. 

 Rep. RM-142. Fort Collins, CO. U.S. Dept. Agric. , Forest Service, 

 Rocky Mountain Forest and Range Exp. Stat., 309P- 



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

 raptors: a review, p. 235~246. In C.J. Ralph and Jim Scott (eds). 

 Estimating the number of terrestrial birds. Stud. Avian Biol. 6. 



Hayward, G.D. and E.O. Garton. 1983. First nesting record for the boreal owl 

 in Idaho. The Condor 85:501. 



Hayward, G.D., E.O. Garton, and P.H. Hayward. 1984. Habitat requirements of 

 the boreal owl in central Idaho. A progress report to the North American 

 Bluebird Society, 15 P- 



Hayward, G.D., P.H. Hayward, and E.O. Garton. 1986. Habitat requirements and 

 distribution of the boreal owl in central Idaho. Annual progress report, 

 Dept. of Fish and Wildlife Resources, College of Forestry, Wildlife and 

 Range Sciences, University of Idaho, Moscow, Idaho, l6p. 



Hayward, G.D., P.H. Hayward, E.O. Garton, and R. Escano. 1987. Revised 



breeding distribution of the boreal owl in the northern Rocky Mountains. 

 The Condor 89:431-432. 



Holt, D.W. 1986. 1986 boreal owl survey results on the Lolo National Forest, 

 Missoula, Montana. U.S. Forest Service Intermountain Range and Exp. Sta. 

 Rep., Missoula, Montana, 4p. 



Holt, D.W. and J.M. Hillis. 1987- Current status and habitat associations of 

 forest owls in Montana, pages 281-288. In : R.W. Nero, R.J. Clark, R.J. 

 Knapton, and R.H. Hamre, eds. Biology and conservation of northern forest 

 owls: symposium proceedings. Gen. Tech. Rep. RM-142. Fort Collins, CO. 

 U.S. Dept. Agric, Forest Service, Rocky Mountain Forest and Range Exp. 

 Stat. , 309 P- 



Palmer, D.A. 1987- Annual, seasonal, and nightly variation in calling activ- 

 ity of boreal and northern saw-whet owls, pages 162-168. In : R.W. Nero, 

 R.J. Clark, R.J. Knapton, and R.H. Hamre, eds. Biology and conservation 

 of northern forest owls: symposium proceedings. Gen. Tech. Rep. RM-142. 

 Fort Collins, CO. U.S. Dept. Agric, Forest Service, Rocky Mountain 

 Forest and Range Exp. Stat., 309 P- 



1 



Palmer, D.A. and R.A. Ryder. 1984. The first documented breeding of the 

 boreal owl in Colorado. The Condor 86:215-217. 



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