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Title: Barred Owl (Strix varia) nest site characteristics in the boreal forest of Saskatchewan, Canada

Author: Mazur, Kurt M.; James, Paul C.; Frith, Shanna D.;

Date: 1997

Source: In: Duncan, James R.; Johnson, David H.; Nicholls, Thomas H., eds. Biology and conservation of owls of the Northern Hemisphere: 2nd International symposium. Gen. Tech. Rep. NC-190. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station. 267-271.

Publication Series: General Technical Report (GTR)

   Note: This article is part of a larger document. View the larger document

Description: Between 1994 and 1996 we located 15 active Barred Owl (Strix varia) nests in the boreal forest of central Saskatchewan, Canada. Eighty-seven percent of Barred Owl nests were located within old mixedwood forest stands. Nest tree species included white spruce (Picea glauca), trembling aspen (Populus tremuloides), balsam poplar (Populus balsamifera), and white birch (Betula papyrifera). The majority of nests were within natural cavities (67 percent), and the majority of nest trees were live (67 percent). Nest trees were of large diameter, averaging 47.4 cm. Nest site availability appears to be an important factor for this species reliance on old forest.

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Citation:


Mazur, Kurt M.; James, Paul C.; Frith, Shanna D. 1997. Barred Owl (Strix varia) nest site characteristics in the boreal forest of Saskatchewan, Canada. In: Duncan, James R.; Johnson, David H.; Nicholls, Thomas H., eds. Biology and conservation of owls of the Northern Hemisphere: 2nd International symposium. Gen. Tech. Rep. NC-190. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station. 267-271.

 


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