Forest Structure Characteristics Within Barred Owl Home Ranges are Similar to Areas Used by Spotted Owls
Scientists with the Forest Service’s Pacific Northwest Research Station sampled forest structure within home ranges of 14 radio-tagged barred owls in the Okanogan-Wenatchee National Forest. Three major forest types were found within the barred owl home ranges: open ponderosa pine, simple structure Douglas-fir, and complex-structure mixed grand fir. Barred owls used the complex-structure mixed grand fir forest type more than the other types during the breeding season (spring and summer), but all of the forest types were used equally during other times of the year.
This research can help managers and scientists understand and plan for the effects of competitive interactions with barred owls on spotted owl populations and will contribute information for review of the listing status of the northern spotted owl under the Endangered Species Act.
|Forest structure within barred owl (Strix varia) home ranges in the eastern cascade range, Washington||(publication)|
Forest Service Partners