18 

 Tree species, size and crown cover were identified for boreal owl 

 locations on National Forest land. The information on timber 

 stands was on file at the Livingston District office. Timber 

 stands are categorized according to major species; however 

 several other tree species may also occur within the stand. Most 

 categorization is interpreted with the use of aerial photographs, 

 and also by using averages from surrounding timber stands. 

 Boreal owl habitat, as described in this report, may be subject 

 to surveyor bias and incomplete data. 



Boreal owl locations ranged in elevation from 6580 to 7900 

 feet. Boreal owls were detected on all aspects except east; west 

 aspect was most common. Four boreal owl locations were on 

 private land and therefore timber stand information was not 

 available. Boreal owls were generally associated with stands of 

 at least 40% crown cover. Three boreal owls were found in 

 association with subalpine f ir/lodgepole pine stands, two with 

 Douglas f ir/lodgepole pine, and two in subalpine fir. 



One unverified flammulated owl was observed in the Crazy 

 Mountains. The observer noted that the vocalization was slightly 

 higher pitched. The elevation was at 6700 feet on a north 

 aspect. The timber stands were classified as second growth 

 lodgepole pine and mature dense subalpine fir. 



DISCUSSION 



These surveys demonstrate that boreal owls are present on 



