Image from the Biodiversity Heritage Library.
Contributed by Smithsonian Institution Archives.
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Transcription
2
Boobies are not mentioned in this section but will be considered
with birds closer to land.
Species Account
NOTE - When reading the maps keep in mind that observations were
continuous through 10 October only. After this date the totals given are
for less than the whole day.
Wedgetail Shearwater
Wedgetails were distributed without any pattern. The occasional increase
in numbers was due to flocks, which were slightly more frequent NE of the
Line Islands.
Wedgetails usually feed by flying or skittering across the surface
of the water with wings back and flapping, and the head extended down to
the water. They would chase fish across the surface often using the legs
in a running motion. At other times wedgetails would sit on the water and
feed by just ducking the head.
Many times when the flock did not break up after a short while, many
of the birds begin setting on the water but not feeding. They appeared to
be drinking water. Many birds sitting together on the water were usually
not feeding but single birds by themselves on the water were feeding.
One orange tagged wedgetail was seen on 11 October at 0945 hours. It
was at 9°25' N - 152°55'W about 1250 miles from Johnston Island.
Sooty Shearwater
Sooty Shearwaters were more abundant south of 15°N. The highest number
on a single day (53) was on 9 October. Otherwise their distribution shows
no pattern.