Cordova, L. Nicolet, T. McCaw, J. Hardest, J. Sanchez, T. Nino, I. Belyeu, C. (2003) Northern Goshawk, Accipiter gentiles atricapillus, Inventory and Monitoring, Annual Report, 2003. Lincoln Supervisor's Office, Lincoln National Forest, USFS. 8 p.

• Accipiter gentilis