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 147 birds banded on Baker in July 1964, 43 were recaptured. Of this number, 63 percent were on Baker and most of the remaining 37 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.