The Thick-Billed Murres of Prince Leopold Island: A Study of the Breeding Ecology of a Colonial High
Guide to Hawk Watching in North America
The Birds of British Columbia Vol. 2 : Nonpasserines: Diurnal Birds of Prey Through Woodpeckers
Birds of Ontario: Habitat Requirements, Limiting Factors, and Status. Volume 1: Waterfowl to Cranes