1. Endangered and threatened wildlife and plants: Determination of threatened status for the northern spotted owl;Federal Register,1990
2. The effects of habitat, climate and barred owls on the long-term population demographics of northern spotted owls;KM Dugger;Condor,2016
3. Competitive interactions and resource partitioning between northern spotted owls and barred owls in western Oregon;JD Wiens;Wildlife Monographs,2014
4. Spatial and temporal variation in diets of spotted owls in Washington;ED Forsman;Journal of Raptor Research,2001
5. Diets and foraging behavior of northern spotted owls in Oregon;ED Forsman;Journal of Raptor Research,2004