Campbell, R.W., N.K. Dawe, I. McTaggart-Cowan, J.M. Cooper, G.W. Kaiser, and M.C.E. McNall. 1990. The Birds of British Columbia Vol. 2: Nonpasserines: Diurnal Birds of Prey through Woodpeckers. Royal British Columbia Museum, Victoria, BC.

Cross-Linked Information Resources (CLIR): an umbrella search web application that allows users to use a single window to simultaneously search six provincial environmental and natural resource information e-libraries and provides access to digital documents in these e-libraries.