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Transcription
Western Gull (Larus argentatus) 4
These were the first sightings for this species in the grid.
All were adult birds, and two females collected had enlarged gonads.
Although the change of status within the grid does not seem large
enough to be significant, it does seem possible that they were
migrants based on data collected in the non-grid areas.
Short-billed Gull (Larus canus) 1
The collection of this species constitutes the first grid
record. The specimen was a subadult with light fat, and was in the
northwest portion of the grid.
Sabine's Gull (Xema sabini) 2
Two were seen in the northeast portion of the grid. All the
sightings to date would suggest that along this portion of the coast
this species is most apt to occur between 50 and 150 miles of the
shoreline.
Pomarine Jaeger (Stercorarius pomarinus) 1
Long-tailed Jaeger (S. longicaudus 1
Jaeger sp. (Unidentified) 2
All of the grid jaeger sightings were in the eastern half of
the north section where they have been frequently noted since January.
Red Phalarope (Phalaropus fulicarius) 927 + 7 nocturnal
The densities of this species have been high and irregular
over the last three cruises. During this survey unprecedented
numbers were recorded, especially in the central portion of the grid.
Their distribution seems to be very local, as was well demonstrated
on 22 April. On this day a 20 mile portion of the cruise track was
surveyed three times (see report introduction.) During these three
transects virtually no Red Phalarope were seen. Yet just to the
west (within 20 miles) hundreds were seen along a 20 mile line.