Forty-fifth Progress Report - - - Kure Atoll 
Period covering 16 through 31 July 19&5» 
The field party composed of David A. Eratloy for the entire report 
period. 
A. Projects presently in progress: 
1. Shorebird count and. seal census taken at biweekly intervals. 
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2. Blue-faced Booby breeding biology - Hosts are checked daily in 
the north antenna field to determine incubation period, hatching dates, 
and addition of now nests; nests in the south antenna field are checked at 
biweekly intervals. Presently there are 25 nests in tne nortn antenna field 
24 with chicks; 1 nest lost, 1 chick hatched, and 6 chicks fledged. In the 
south antenna field there are 9 nests all witn chicks; j> nests uost, 2 
chicks fledged. 
3« Brown Booby breeding biology — Nests in cne north antenna xield 
are checked daily; nests in the south antenna field at biweekly intervals. 
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Thera are 25 nests in the north antenna xield, 21 with, cnicks; ^ nssLs 
abandoned, 1 new nest, 3 chicks hatched,! chick lost# In the south ancenna 
field there are 11 nests with 6 chicks# 
k. Red-footed Booty and Great Frigatebird breeding biology - The 
north and central roosts are checked biweekly to determine the progress 
of the breeding cycles of these species# There are still approximately 
78 red-foot nests in the central roost and 163 nests in the north roost; 
frigatebird nests still number approximately 266 in the north roost# 
Random samples are taken of nests of each species to determine age of 
young in both roosts# 
5# Collection of 50 blood samples per week in proportion to the 
number of each species on the island continues# 
