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Transcription
The distribution of albatross during this survey was not random. On
4 December 24 birds were recorded in section R in the northwest corner of
the grid. This is the highest number of birds yet recorded on one day of
observation. This also is the first time that the highest concentration of
albatross has occurred in the northwest section.
It is to be noted that the two low counts in sectors S (north central)
and Z (southeast) are in areas where little diurnal coverage was achieved.
Since birds accumulate during the day, with highest numbers when garbage
is dumped, a small linear mile coverage in an area in the morning hours
will normally result in low numbers of albatross recorded.
Of the 39 birds examined for rump color, 34 (87 percent) were immatures
dark-rumped). Small numbers of white-rumped birds recorded indicate that
the adult birds have returned to the breeding islands.
Fulmar (Fulmarus glacialis) Number observed: 24
All were dark phase birds. The presence of birds in the
southern portion of the area was not expected. In January
and February sightings in the southern section accounted for less than one
percent of the observations.
On tenuous evidence I suggest that when these birds arrive on the winter-
ing grounds they go through a "shuffle period", one of wandering in search
of a relatively constant food supply. Thus, arriving birds would be well
scattered until they finally settle in "winter ranges" (this may also hold
for immature Black-footed Albatross during early winter). During this
survey, however, their distribution was not random.
Sooty Shearwater (Puffinus griseus) Number observed: 79
Seventy two percent of the birds were recorded in the
northeast corner of the grid. The birds were evenly dis-
tributed in other areas of the grid. No directional movement was recorded
indicating that the "secondary migration" recorded on EGS 17 has terminated
or reached a pause. Sooties were recorded in a feeding flock also containing
Herring Gulls and Jaegers.
Leach's Storm Petrel (Oceanodroma leucorhoa) Number observed: 81
A concentration (37 percent of observations) was recorded
in the northeast corner of the grid. Observing conditions were
very poor for sighting storm petrels due to the heavy seas and
ship's characteristics (discussed above). Thus the quantitative observations
on this species are not indicative of actual numbers.
Fork-tailed Storm Petrel (Oceanodroma furcata) Number observed: 2
Single birds observed in sections R and V.