Barred Owl
Scientific Research Papers

Scientific Research Papers

The following is a list (more references are included in a draft Environmental Impact Statement on experimental removal of barred owls in support of northern spotted owl recovery).  Also see this timeline on the evolution of the barred owl threat, which summarizes the significance of this key research.

Anthony, R.G., E.D. Forsman, A.B. Franklin, D.R. Anderson, K.P. Burnham, G.C. White, C.J. Schwarz, J. Nichols, J.E. Hines, G.S. Olson, S.H. Ackers, S. Andrews, B.L. Biswell, P.C. Carlson, L.V. Diller, K.M. Dugger, K.E. Fehring, T.L. Fleming, R.P. Gerhardt, S.A. Gremel, R.J. Gutiérrez, P.J. Happe, D.R. Herter, J.M. Higley, R.B. Horn, L.L. Irwin, P.J. Loschl, J.A. Reid, and S.G. Sovern. 2006. Status and trends in demography of northern spotted owls, 1985–2003. Wildlife Monograph No. 163.

Buchanan, J.B., R.J. Gutierrez, R.G. Anthony, T. Cullinan, L.V. Diller, E.D. Forsman, and A.B, Franklin. 2007. A synopsis of suggested approaches to address potential competitive interactions between barred owls and spotted owls.  Biol. Invasions 9:679-691

Courtney, S.P., J. A. Blakesley, R.E. Bigley, M. L. Cody, J. P. Dunbacher, R.C. Fleischer, A. B. Franklin, J. F. Franklin, R.J. Gutiérrez, L. M. Marzluff, and L. Sztukowoski. 2004. Scientific evaluation of the status of the northern spotted owl. Sustainable Ecosystems Institute, Portland, OR, U.S.A.

Dugger, K.M., R.G. Anthony, and L.S. Andrews. 2011. Transient dynamics of invasive competition: barred owls, spotted owls, and the demons of competition present.  Ecological Applications.

Forsman, E.D., R.G. Anthony, K.M. Dugger, E.M. Glenn, A.B. Franklin, G.C. White, C.J. Schwarz, K.P. Burnham, D.R. Anderson, J.D. Nichols, J.E. Hines, J.B. Lint, R.J. Davis, S.H. Ackers, L.S. Andrews, B.L. Biswell, P.C. Carlson, L.V. Diller, S.A. Gremel, D.R. Herter, J.M. Higley, R.B. Horn, J.A. Reid, J. Rockweit, J. Schaberl, T.J. Snetsinger, and S.G. Sovern. 2011a. Population demography of northern spotted owls: 1985–2008. Studies in Avian Biology 40. Cooper Ornithological Society.

Forsman, E., Snetsinger, T., McCafferty, C., Cederstrom, J., Lee, R, Matthews, I., Plawman, T., Stephens, N., and J. Swingle.  2011b.  Demographic characteristics of spotted owls in the Oregon Coast Ranges, 1990-2010.  USDA Forest Service, Pacific Northwest Research Station, Corvallis, OR, USA.

Gutiérrez, R.J., M. Cody, S. Courtney and A.B. Franklin. 2007. The invasion of barred owls and its potential effect on the spotted owl: a conservation conundrum. Biological Invasions 9:181–196.

Hamer, T.E. 1988. Home range size of the northern barred owl and northern spotted owl in western Washington. M.S. thesis, Western Washington University, Bellingham, WA.

Note:  the citation for the published version of the above is:

Hamer, T. E., E. D. Forsman, and E. M. Glenn. 2007. Home range attributes and habitat selection of barred owls and spotted owls in an area of sympatry. Condor 109:750–768.

Kelly, E.G., E.D. Forsman, and R.G. Anthony. 2003. Are barred owls displacing spotted owls? Condor 105:45–53.

Olson, G.S., R.G. Anthony, E.D. Forsman, S.H. Ackers, P.J. Loschl, J.A. Reid, K.M Dugger, E.M. Glenn, and W.J. Ripple. 2005. Modeling of site occupancy dynamics for northern spotted owls, with emphasis on the effects of barred owls. Journal of Wildlife Management 69:918–932.

Singleton, P.H., J.F. Lehmkuhl, W.L. Gaines, and S.A. Graham. 2010. Barred owl space use and habitat selection in the eastern Cascades, Washington. Journal of Wildlife Management 74:285–294.

USFWS. 1989. Status review supplement for the northern spotted owl.

Wiens, J.D., R.G. Anthony, and E.D. Forsman. 2011. Barred owl occupancy surveys within the range of the northern spotted owl.  Journal of Wildlife Management 75(3): 531-583.