birds 
annotated list 
Idsiansld, 
birds-annotated list 
BLUE-FACED BOOBY 
LS 13 J&ie l6-19^ , 66 
(PCS rept ); Roosting birds occured on two or three wide 
sandy points on the southwest side, where about 300 
were counted at dusk 19 June, and an estimated 200 to 
300 more roosted on the northwest beach* These, to¬ 
gether with the nesting birds and young, brought the 
total :for the island to about 800 birds* Population 
estimates 72/, adults, 75 young, 10 nests with eggs, 
total estimate 300« No* banded 3* 13 blood samples taken* 
Returns, 10 banded on Lisianski, 3 banded on Lays an picked 
up on Lisianski* 
June 16-19,'66 
(PS ); About 300 birds were counted on the SW side at dusk 
19 June* Crossin estimates 2-300 more roosting on north 
beach* I didn’t see these* 
June 18,J66 
(D.P.) Breeding species and their approximate numbers: 
Blue-faced 1+00. 
June 16-18j*66 
(D*P Summary)$ Perhaps because of the lack of a lagoon 
here, 99% of nestsm were on the high ground just above 
the bush around the entire island* Nests ranged equally 
from eggs to large chicks® 
June 16-19 , T 66 
(RSC) Species account, Mg>st common along the beach at edge, 
of fringing Scaevola. Most birds were noted breeding which r? 
ranged from eggs to full fledged young. Most young were in 
the l/k to l/2 grown stages only one young was noted per 
pair. A total of 58 nests with young, 3 with eggs were 
counted on l8 June. Birds roosting in small clubs on NW 
and SW beaches. Shelton counted about 300 birds on SW 
beach at dusk and I estimate an additional 200-300 
on Mi beach at dusk. Estimated population 800 birds. 
LS 17 Octobwr 18-20*66 
(KB Rept.); Estimated population -1.200 Rel. Class B. 
Number Banded -l62. Number recaptured - ikO, Inter¬ 
island -7, Number Specimens collected -0. Much of 
the time spent on the island was involved working with 
Blue-faced Boobies. As a result the population figure 
for this species is considered m 9 re reliable than those 
for other species. The number was determined by assuming 
that the l/k of the beach area that we worked was re¬ 
presentative of the remainder. A diurnal count on l8 
October showed 135 adults and 15 young immatures dis¬ 
tributed evenly around the island on the beach. Numbers 
were very much greater at night when many clubs of fifty 
to seventy birds were encountered. The young birds were 
recorded as locals during the diurnal survey, but apparently 
most of the young birds on the island are technically 
flying immatures. Twenty-nine Blue-faced Booby "locals” 
were banded at night on 19 October, indicating that birds 
of this age group were away from the island during the 
day, but returned with the adults at night. Of the 7 
