ATF No. 6 
DRAFT 
6 . 
and number of birds banded do not explain the difference in the number of 
birds going to Baker Island. The absence of birds from McKean, 150 miles 
south, is also hard to explain. If birds from McKean, Birnie, and Phoenix 
rarely go north of the equator why do Enderbury birds do so? 
Of the ik'J birds banded on Baker in July 19$*, 45 were recaptured. 
Of this number, 65 percent were on Baker and most of the remaining 57 
\ 
percent were on Howland. This further emphasizes the close relationship 
between Howland and Baker and also the transitory nature of birds in clubs. 
In summary, the number of breeding birds, both species and individuals, 
on Baker Island continues to increase. Using the Blue-faced Booby population 
as an example, the nesting birds come from large roosting clubs and were 
formerly unattached to any island. The majority were using the area around 
Howland and Baker as a feeding area prior to the elimination of cats on 
Baker and frequently roosted on Howland. 
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