Great Grey Owl (Strix nebulosa) Science Article 4
I observed a Great Gray Owl (Scotiaptex nebulosa nebulosa) in the Bridger Mountains,about 20 miles northeast of Bozeman, Montana. The locality was in the upper Canadian Zone, at 7,000 feet elevation. The day was cloudy and dark, with occasional spatters of rain.
C. A. TRYON, JR., Wilson bull. Vol. 55, No. 2