locations were recorded on 7.5 minute U.S.G.S. topographic maps 

 along with the date and time for each calling point and observation 

 (Appendix 2) . Calling points were numbered with the route number 

 followed by the calling point number. Owl locations were described 

 according to the timber type of the stand the owl was located in. 

 These types are named for the major volume species in the stand, 

 regardless of tree size, and other species of trees may be present. 



RESULTS 



Surveys were conducted on 19 nights during the survey period. 

 Weather, especially wind, caused some of the 19 surveys to be cut 

 short and resulted in total survey cancellation on other nights. A 

 total of 15 survey routes were established which totaled 70.2 miles 

 and encompassed 87 calling points. The total number of miles 

 surveyed was 82.6 miles (Table 1). The elevation of calling points 

 ranged from 4720 ft. to 8033 ft. Temperatures during the surveys 

 ranged from 14 to 36 degrees Fahrenheit. 



Boreal owls were detected at 8 calling points with a minimum 

 of 6 birds detected. Northern saw-whet owls were the most common 

 owl detected, being heard at 12 stations with a minimum of 14 birds 

 detected. Seven great horned owls ( Bubo virginianus ) were detected 

 at 5 stations. Two barred owls ( Strix varia ) were repeatedly 

 located in one area from 3 calling stations and a great gray owl 

 and western screech owl (Otus kennicottii ) were located at one 

 calling point each. One unknown owl call was heard at one calling 

 station (Table 2) . 



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