R. S. Crossin 
1965 
Red -tailed Tropicbird 
18-21 July (conto) 
uhis "was quite dense. A few birds were found with partially - well incubated 
eggs but the majority had chicks of varying sizes up to adult size. 
The nests are deep shallowed out places in the sand, usually under dense branch 
formations of the Scaevola o Lea vs and other litter usually appear in nests, but 
this appears accidental and not brought in by the parent birds. In places nests 
are only a few feet from each other. One egg per clutch. 
7 August - No change in numbers, most birds on nests had chicks of various stages - 
no eggs found. 
11_Au£. - Eggs of all stages of incubation found, and chicks of all stages. A few 
immatures with the flying population 
Blue-faced Booby - Laysan 
18-21 July Ground nester, all with large young. In no case did I observe 
more than one young - although at Lisianski 14-17 a few pair still 
had heavily incubated eggs or an egg and nearly hatched chick. 
Apparently 2 eggs may be a normal clutch, but only one of the set 
ever hatches . 
Invariably the young bird is attended by one parent. 
At Lisianski the few birds still in mid-nesting stages showed no 
evidence of a nest being constructed to hold the egg - rather a 
shallowed out area on bare ground. Estimated population ~ 1,000 
birds. 
7 August No change - numbers of breeding. 
9 August One adult blueface observed incubating a dried-up albatross egg - 
probably Laysan Albatross. Egg in a scrape on the west shore of 
lagoon. Many other rotten albatross eggs about. 
Brown Booby - Laysan 
18-21 July On the night of the 20th approximately 6 pr were encountered in 
dense Scaevola while searching for Laysan Albatross chicks. I 
did not at that time have the means to check the nesting very 
closely, but 5 nests were noted - 2 contained 2 eggs each, the 
toeher contained one small young. The two sets of eggs appeared 
very dirty and enst soiled and probably were of advanced incu- 
bation. A. substantial nest of sticks and grasses was constructed 
on the ground in each case. No other birds were seen during the 
visit . 
On Lisianski a small colony of about the same size was noted, but 
all chicks were running about and nearly full-grown. Estimated 
population on Laysan = 500. 
7 August Estimated population between 50 and 100 individuals: 2 nests with 
5 eggs each noted and one nest with 2 chicks. Several half -grown 
chicks about west shore. 
