were breeding. 
Petrel sp. 
Kenyon found a dead small petrel in the center of the island near 
the edge of some morning glory. Judging from his comments it was either 
a Bulwer*s Petrel or a Sooty Storm Petrel. 
Bed-tailed Tropicbird Estimated population - c. 100 
Breeding status: only nests with 
eggs found. 
Bed-tailed Tropicbirds were low in numbers, a maximum of 10 birds 
having been seen in display over the northwest corner of the island at 
1355 on the 20th. I found only about 5~6 birds down on the ground on 
the northwest corner of the island, either under Scaevola or mixed 
Scaevola and morning glory. Only two occupied nests were found by me 
and both contained eggs. 
Blue-faced Booby Estimated population----- i +30 
Nesting population - c. 225 
Besuits of sample nest count (be¬ 
lieved to be about 85-90 percent 
complete) : 
# of nests’ counted- 98 
# of nests with eggs- 76 ( 78 %) 
■-ff of nests/naked young*- 6 ( 6 %) 
# of nests/small downy young-— 15 ( 15 %) 
# of nests/medium downy young- l( 1%) 
Number banded: 18 (9 A-M, 9 A-F) 
Number returns: 1^-6 ( 7 6 A-M, 69 A-F, 
1 A-U) 
The nesting cycle of the Lisianski Blue-faced Boobies was in advance 
of all other islands where we found it nesting,with the possible exception 
of Green Island, Kure Atoll. -Nonetheless, nearly 50 percent of the popu¬ 
lation was still in prenesting pairs. 
On the afternoon and evening of the 20th I attempted to make as com¬ 
plete a nest count as possible and get pair data for as many birds as I 
could. The island was arbitrarily divided into three areas to see if one 
area or another was more favored by the early nesters. Area 1 was from 
the Fish and Wildlife Befuge sign (camp) around the north end of the 
island to where a distinctive, dike-like portion of rocky reef extends 
outward from the east side of the island'( = roughly the northwest, north 
and northeast half of the east perimeters). Area 2 was from this point to 
the high south point of the island ( = roughly the southeast half of the 
east perimeter). Area 3 "was from the high south point to camp. ( = 
roughly the south, southwest and central west perimeters). As Table 1 
below shows, there appeared to be little difference in the stage of nesting 
from area to area, and allowing for differences in size of the sample area, 
little difference in nesting density from area to area. 
* Includes nests that also contained an, egg. 
