RESPONSES OF PELAGIC CORMORANTS (PHALACROCORAX PELAGICUS) TO MARINE TRAFFIC AND BALD EAGLES (HALIAEETUS LEUCOCEPHALUS) IN BARKLEY SOUND, BRITISH COLUMBIA

摘要

In Barkley Sound, British Columbia, Pelagic Cormorants (Phalacrocorax pelagicus), while formerly abundant (Vermeer and Rankin 1984), have suffered massive declines of up to 85% since 1969 (Carter and others 2007). This decline is thought to be due in part to disturbance by humans and Bald Eagles (Ha-liaeetus leucocephalus) (Chatwin and others 2002; Carter and others 2007). In an attempt to investigate the causes of this decline, we undertook a brief study of Pelagic Cormorants within Barkley Sound during the nesting period in the summer of 2011.