The occurrence of Mottled Petrels in the Bering Sea

• Main Authors: Ogi,Haruo, Tanaka,Hiroyuki, Yoshida,Hidetsugu
• Format: Report
• Language: English
• Published: Research Institute of North Pasific Fisheries, Faculty of Fisheries, Hokkaido University/Research Institute of North Pasific Fisheries, Faculty of Fisheries, Hokkaido University/Research Institute of North Pasific Fisheries, Faculty of Fisheries, Hokkaido University 1986
• Subjects: Bering Sea; Memoirs of National Institute of Polar Research; Polar Research
• Online Access: https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2043; http://id.nii.ac.jp/1291/00002043/; https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2043&item_no=1&attribute_id=18&file_no=1

We summarized seabird census data from five research cruises, 1979 to 1985,in order to clarify the distribution of Mottled Petrels (Pterodroma inexpectata) in the Bering Sea. The northward incursion of Mottled Petrels into the Bering Sea occurred during the period from late June to mid-July. Most petrels were restricted to the central Aleutian Basin, where surface water temperatures were about 5.0-10.9℃. The number of Mottled Petrels in the Bering Sea was estimated to be about 1500000 birds.