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Transcription
PROGRESS REPORT NO. 1 ---- ATF TRIP # 6
During the period October 1, 1964 to October 16, 1964.vists were made
to Howland and Baker Islands and 8 days of at sea records were obtained
during the trip from Pearl Harbor to Howland Island. The islands are discusse d
briefly below and on the biweekly report sheets. No analyses of the at sea
records has been possible but on this trip thousands of migrating Sooty
Shearwaters were seen and a number of birds tentively identified as Collared
Petrels were recorded for the first time in this area.
Howland Island
The field party , 8 people, landed here on the morning of the 9th and
left early on the 13th. During this period all personnel were instructed in
the various phases of the work to be accomplished during the remainder of
the trip. 13,101,birds were banded, 35 were collected and 856 bande returns were
obtained. Collections were made of shinks, gekkos and land crabs. Approximately
50 plant collections were made and numerous photographs were made of the
island and the permant quadrats ( plant study). An activity study was
maintained on bird movement for one day and numerous notes were taken on
nest distribution,and construction. No mammals were found.
Baker Island
A landing was made here on the afternoon of the 13th and the party
remained until noon on the 15th. Bird numbers have continued to increase
and the number of nesting Blue-faced Boobies and Red-tailed Tropicbirds
was more than double the number found in July. This is even more important
when it is realized that July is the peak nesting month for these species
with a father sharp decline from that period. In addition Great Frigatebirds
-nd Brown Boobies were found roosting on the groud for the first time since
the Smithsonian prtis started visiting the islands (March, 1963). No cats
were seen and it can be assumed that they were eliminated in July, 1964.
288 birds were banded with 142 returns and 8 birds and 9 mice were collected.
Collect/ons were made of skinks, gekkos, land crabs and fish. 53 plant collec-
tions were made with the usual photographs of study plots. An activity study
was maintained for one day. Nest distribution was plotted and several
berlese samples were taken from the nesting areas. Information obtained on
Hermit Crab density indicates that the species is seven to ten times as
abundant on Baker Island as on Howland.
Ship Cooperation
To date the ship been very helpful and has done an excellant job of
landing personnel and equipment on the islands and maintaining them there.
The navigation lights now being used require daily boat runs to bright*in*
bring in new batteries and take out old ones to be charged but the lights
are far superior to anything else we have tried. Except for the daily
battery change they are very little trouble and provide a reference point
for the field party at night as well as for the ship. Accomodations, food
and laundry service are all in pleasant contrast to previous trips.