The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder easternberingsea00hood Year: 1981 Pelagic distribution 699 our maps thus primarily reflect data from Fork-tailed Storm-Petrels. The pelagic distribution of storm-petrels is given in Figs. 40-18 to 40-20. Spring, summer, and fall sur- veys showed storm-petrels, mostly Fork-tails, concen- trated in the southeastern Bering Sea, with moderate numbers inshore to the 100-m isobath. Very few storm-petrels were seen north of 58° (our northern- most record is of four Fork-tailed Storm-Petrels in Se
The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder easternberingsea00hood Year: 1981 Pelagic distribution 699 our maps thus primarily reflect data from Fork-tailed Storm-Petrels. The pelagic distribution of storm-petrels is given in Figs. 40-18 to 40-20. Spring, summer, and fall sur- veys showed storm-petrels, mostly Fork-tails, concen- trated in the southeastern Bering Sea, with moderate numbers inshore to the 100-m isobath. Very few storm-petrels were seen north of 58° (our northern- most record is of four Fork-tailed Storm-Petrels in September in the Bering Strait) or inshore of the 100- m isobath, except in fall, when there were scattered records of birds over the shallow waters of northern Bristol Bay. Fork-tailed Storm-Petrels were seen over deep ocean water, but not over shelf waters during a single winter aerial survey. Most of our records of Leach's Storm-Petrels were from the deep water im- mediately north of the central Aleutian Islands. We have only three records of this species over the conti- nental shelf of the eastern Bering Sea (two in May and one in July), and these were all in Bristol Bay. The scarcity of Fork-tailed Storm-Petrels in the northern Bering Sea may be a function of the loca- tion of nesting colonies. Even though they are known to forage at great distances from their nest sites (Boersma and Wheelwright 1979), they may not forage as far as these waters. It is unlikely that the Figure 40-18. Pelagic distribution of storm-petrels—air and ship surveys: March-May.
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