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Transcription
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Jaegers
(41)
Jaegers were also quite abundant in the southern section of the non-grid,
specifically in the area with large concentrations of Kittiwakes and other
feeding birds. They were frequently observed harrassing the Kittiwakes and
were often successful in causing a regurgitation. Thirty-three were recorded
as Pomarine and 8 as Jaeger sp. Since light conditions made identification
difficult, it is probable that Parasitic Jaegers were also present though none
were positively identified. Only one Jaeger was sighted in the northern section.
Red Phalarope
Red Phalaropes (9) appeared to be well-scattered over the southern section
where observations were made. These were our first non-grid records, but prob-
ablely because we were so far from land and had not made a day survey in this
specific area. Each bird was observed singly, one being in a flock of Kittiwakes.
None were seen in the northern section.
Gulls
During the first day of non-grid observations, as we passed through the
Santa Barbara Channel, no Herring Gulls were identified. The next day, as the
grid track was neared and we were distant from land, Herring Gulls (16) were
following the ship. It appears that the Herring Gull is being out-competed
near land as indicated by the large numbers of other gulls. In the Eastern
Pacific it seems to be a pelagic gull. Judging from the previous cruises and
this one, the Herring Gull commonly follows at sea but decreases in number as
land nears and other gulls appear. In the southern section the Herring Gull
(31) was common but land was distant and only a few other kinds of gulls were
sighted (i.e., California, Western, Ring-billed). Adults outnumbered immatures
4:1 in the north, 15:1 in the south. In the northern section California (30),