BRORH BOOBY---Annotated List - 
RTHOA 
Dec. 9-16* 1961 Relatively rare - as usual. Females were on eggs. 
(Kramer) 
June 10, 1962 
(Kramer & B) 
March 6-7? 196^- 
(Amerson, POBSP) 
With large dowry young. 
Population estimate 
Ro of nests 
Ro of young - 
Ro. banded by S.I. ■ 
Remarks: All on eggs, one 
very large nestling banded, 
(Walfenr) 
Rest building to one or two eggs. Some nests had two chicks. 95 fo 
with eggs. One clutch with three eggs recorded. ... Saw one Brown 
Booby with two eggs. Another Lays an Albatross sitting on Brown 
Booby egg (Rear head of Middle Valley. ) 
July 26, 
(Kridler) _ I saw two adult Brown Boobies as well as several immatures, some 
of which were not capable of flight. Most of these nests were below 
Miller Peak along the west ridge of the island . 
Sept. 23-2^,196^ 
(Fleet) 
(Kridler) 
Counted : 2 adults and k immatures 
Estimated total population-: 20 
Estimated 15-20; this may be low. Recorded were two adults and 
four flying immatures. 
March 13 -lk,1965 
(Bamko, POBSP) 
Estimated island total population 
Breeding: eggs and young seen. 
Banded--: Rone 
: 150 
(Kridler) 
___ Estimated 75 nests. Ma ny w ere seen near Tanager Pe ak and on.the 
east end . Most of those on the west end were along the west ridge 
from Miller Peak to Dog-head Peak. Almost all the nestw contained two eggs. These 
birds are much warier than the other boobies. 
July 28“ Estimated number- 50 + 25 fo 
August 1, 1966 Ro. of nests - -T- 
(He Men, POBSP) Ro. of young- 20 + 50 fo 
Age of young-21+ days 100 fo 
Banded- 1 nestling 
Population at end of breeding cycle. This species was observed 
only on peripheral ridges and peaks, never on interior ridges or slopes. 
No single colony was found, but the birds occurred singly over the areas 
where they were observed. One pair with an immature (the latter was 
caught and banded) was noted on the point h00 yards southeast of camp. 
Population estimate for the island is 50 adults and 20 immatures. 
