ENDERBURY ISLAND 
BLUE-FACED BOOBY 
DRAFT 
ANNUAL CYCLE: The infrequent trips to the island and the long period between 
trips make it impossible to accurately delimit the annual cylce. In 
In February, LQ4&~~ 1954 
most years there is probably egg laying year around. 
there -wa-s were no nests or young present but this was a poor nesting year for 
all species. 
presents the estimates of nests for all seven POBSP visits . 
Table 
By interperlation from these figures we can sap tha 
late 
large numbers of eggs are first laid in March and the number then increases 
Nests of Blue-faced Booby on Enderbury Island 
T a ble 
Februa ry 
Iky July 
November 
1963 
272 - 104-20 
29-2-7O 
1964 
220 - 184-20 
m- 
63-61-187 
1965 
The first figure represents the number of nests with eggs, the second figure 
represents small young and the thri#d large young. In 1965 4&e-yew. small and 
large young were not differentiated in the counts. 
into June with a considerable number of eggs still being laid in October. 
REPRODUCTION: Nests are found on all parts of the island but the heaviest 
concentration are on the west side from the Guano Hill to the south end of the 
island, In July, 1964 the area from the lighthouse to the 
south end of the island contined 51$ of the nest and the area from the 
Most of 
lighthouse north to the Guano Hill contained 28% of the nest. The remaining 
21$ of the nest were located just north of the Guano Hill or on the east 
sid 
