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Transcription
R.Clapp
1964
Oct. 10 - Taongi Atoll, Marshall Islands
Arose at 7:30 and when I reached the flying
bridge Taongi was in sight, a possible? Lesser
Frigate was seen and Blue-gray Noddies and white-
phase Wedgetails were seen. One immature
frigate dove repeatedly at the fishline trailing
the ship for about a minute. No Black-naped
Terns were seen along the reef. From a distance
the islands of this atoll did not look promising
for birds as the number of birds over the islands
seemed much scantier than on the "good" Phoenix-
Island bird islands.
Sibylla Island
Off the atoll to the west in the morning
both Phoenix phase and white-phase Red-footed
Boobies were seen flying beyond the edge of the
reef.
At 1445 a feeding flock was seen as we
approached the reef to again try the passage into
the lagoon. The refoots seen were mostly
white-phase but Amerson saw one Brown-phase bird.
On the evening on Sibylla we banded redfoots
and kept track of ratios of different phases.
Of 179 adult birds banded, 171 were white phase,
2 were brown phase and 6 were Phoenix phase.
Several instances were noted of Phoenix phase
birds mated to white phase birds. (737-80017,
80041, 80053)
One fully adult (from general plumage pattern
tail color, and soft-part coloration) white phase
redfoot (with a golden head wash) possessed an
intermediate tan eye color. Face part colors
were quite bright, gular pouch black, and feet
were medium red in color.
Apparently there are several types of immatures
or subadults as the case may be. One bird,
737-80075, was generally of the appearance of a
white phase bird except that the back, wings, and
tail had mottled brown on them. Termed in further
discussion as "immature white phase" (better Suba.)