BLUE-FACED BOOBY-.-— -— Annotated List 
i 
LISIANSKI 
Table 1. Results by area of 20 March 1968 nest count of Blue-faced Boobies 
0 
on Lisianski* 
Area 
1 
Area 2 
Area 3 
Totals 
Contents of nest 
No. 
El 
No. 
*f> 
No. 
El 
A 
Nests/ 1 egg 
9 
(2 5) 
6 
( 27 ) 
10 
(25) 
25 
( 26 ) 
Nests/ 2 eggs 
20 
(56) 
11 
(50) 
20 
(50) 
51 
(52) 
Nests/ egg & naked young 
1 
( 3) 
- 
3 
( 8) 
h 
( 4) 
Nests/ 1 naked young 
1 
( 3) 
- 
- 
i 
Nests/ 2 naked young 
- 
- 
1 
( 3) 
i 
( 1) 
Nests/ 1 small downy young 
5 
W 
k 
(18) 
6 
(15) 
15 
(15) 
Nests/ 1 medium downy young 
1 
5 
- 
- 
.(..a) 
Total nests/ eggs 
29 
(81) 17 
(77) 
30 
(75). 
76 
(78) 
Total nests/ young 
7 
(19) 
5 
( 13 ) 
10 
(25) 
22 
(22) 
Total active nests 
AA. 
22 
ko 
98 
20 ”clutches” were checked for stage of incubation by candling. 8 of 
10 2-egg ”clutches” were incubated while only 1 of 10 1-egg ”clutches” was 
incubated® This results in a mean clutch size of I .89 for 9 clutches 
known to have been completed® 
Pair-data were obtained for 1^2 birds, of which 88 were prenesting - 
birds roosting together and 5^ were birds with active nests. 
No clubs, subadult, or immature birds were seen by me nor do I re¬ 
member any other members of the field party stating that they had seen 
any. Of the 146 returns, 14-2 had been banded on Lisianski and k had been 
banded on Laysan, one of them as a Laysan Albatross. Three of these birds 
were roosting with Lisianski-banded birds and the fourth was paired with 
a bird with one egg. 1 
:r 
■ M 
SC notes) 
R.B.Clapp 
1968 
Blue-faced Booby 
March 20-21 Lisianski Island, Hawaiian Leeward Islands 
During the afternoon and evening of the 20th 1 made a 
nest count of Blue-faced Boobies around the perimeter 
(none nested in the interior). The area was arbitratily 
divided into three parts; Area 1 was from the sign (camp) 
to the beginning of the rock reef shore at the north 
end of the island. Area 2 was from the beginning of the 
rocky area’’to the high south point of the island. Area 
3 was from this point back to the sign (camp.) Since the 
area was covered twice, once in the afternoon and once 
in the evening I believe that the count was probably 85 - 
90 io complete for art active nests 
1 - i 
s. 
.X 
