GREAT PRIGATEBIRD--Annotated List-p. --- LISXANSKI 
. r ... ,44 9 ' . * 
LS$ 19 - June 2 -6 1 67 (cent* ) 
(DB notes) June 2 - I estimated 160 nests (probably lower for my area) 60$ eggs, 
10 % small, 15 % medium, 15$ large. Upon closer examination many of the birds 
believed nesting were probably roosting. 
June 3~ I sampled nests taken at random for the frigates. 
Height of nests Nest materials 
1 foot 
- - 10 1 
° / 
10 
Scaevola 
: 5^/5^ 
2 feet 
-- 20 1 
5 
25 
Trihulus 
: 50/5^ 
3 feet 
4 ) 
12 3 
16 
Ipo.ind. 
WC 
: l /50 
: 6 / 5 ^ (wild cucumber) 
(RdeL notes) - 
Great 
Frigates 
are with eggs 
or small 
downy young. 
LS# 20 - AUg.31-Sept.5j *67 (BBC-CAE Rept) Population estimate-— c. 1,000 
Sample nest count results: (12 nests) 
Nests/ egg -■ 
none 
Nests/ small 
downy yg. -- 
1 
Nests/medium downy yg. -- 
1 
Nests/large < 
Dr depednet yg- 
10 
Estimated $ of 
dep. imm. ---- 
99 
• • 
Banded ---— 
123 
(adults) 
26 
(subadults 
2 
(immatures 
0 
(nestlings 
151 
(tot al) 
Returned -- 
3 
(adults) 
4 
(subadults 
7 
(6otal) 
Blood-sampled • 
20 
(adults) 
5 
(subadults 
25 
(total) 
Great Frigatebirds were found roosting and nesting on Scaevola wherever it 
Occurred on the island but appeared to be somewhat more coommon at the southeast 
and northeast corners of the islnd. Ely noted that non-breeding birds were roosting 
andgroups segregated by sex. One small group (about 4-10 birds) would be 
entirely composed of adult males, while another small group, a short distance away 
would be composed solely of adult females. A similar sexual segregation was noted 
^n Laysan. 
He also noted that females appeared to be far more numerous than males. Of 
93 adults handled, 68 (73$) were females. This bias is probably a real phenomenon 
since no age class appeared to be more wary than another and Ely made no particular 
effort to obtain one age class in preference to another. 
29 of 124 (ll$) roosting Great Frigatebirds handled were subadults and 2 (l $) 
were immatures. 
Siz of the seven Great Frigatebirds returned were banded on other islnds. 
Three were baned on French Frigate Shoals, 2 were banded on Eure , and 1 was banded 
on Pearl and Hermes. 
