-3- 
The main concentrations of Red-foots is along the heavily forested 
southeastern sections of the atoll and islands in the east lagoon* A 
good portion of these birds £oost in the same spot each night. This wqs 
made evident by the large proportion of banded birds roosting low enough 
to be captured and the unbanded birds above 20'• Also, several series 
of consecutive returns were noticed by our field party* 
Color phases were recorded on 219 birds. Forty-seven per cent of 
these were inter-mediate phase with \ of the back white, were inter¬ 
mediate phase with a complete brown back, and 7% were light phase. Dark 
phase Red-foots were present in small numbers and probably represent 
less than .1$ of the total population. 
One Christinas Island Red-foot is the only inter-island return 
recorded by our field party. 
Brown Booby Estimated population -1|00-10$ 
(Sula leucogaster) Number banded -27 
• Number returns -12 
Number sera samples - -31 
Brown Boobies nested on the large island directly south, across the 
lagoon from Cooper Island. Their main roosting concentrations were along 
the causeway and on one islet in the east lagooh. 
Great Frigatebird 
(Fregata minor) 
Estimated population -300-10$ 
Number banded -2 
Great Frigates swirled and roosted at the southeastern end of the 
atoll. No nesting activity was observed and from the numbers of flying 
immatures it seemed likely that they had finished nesting a couple of 
months previous. 
Pintail Duck Actual count -9 
(Anas acuta ) Number collected -6 
Pintails were collected at the duck pond on Paradise Island. They 
were fairly tame, allowing us to collect 6 out of eight the first day. 
After that, ducks were not observed with the exception of one drake 
flying over the lagoon. 
Members of the Pele informed us of two flocks of ducks and possibly 
2 species that they had observed before our arrival. The duck pond on 
Hotel Island was void of ducks on each of our visits. 
The collected birds represent adult male and female, and immature birds, 
all of which were quite lean. 
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