Boal, Clint W., David E. Andersen, and Patricia L. Kennedy. 2001. Home Range and Habitat Use of Northern Goshawks (Accipter gentilis) in Minnesota. Final report to the Minnesota Department of Natural Resources, Nongame Wildlife Program. http://files.dnr.state.mn.us/eco/nongame/projects/consgrant_reports/2001/2001_boal_etal.pdf