V, 
*1 * 
RED-FOOTED BOOBY 
Annotated List 
IX 
BIHOA 
Dec. 9-16? 1961 One main colony seen on the upper slopes of Miller Valley. Single 
(Kramer) _ nests scattered over the island. Pritchardia groves offer major 
roosting and resting areas. .All young were nearly fill grown 
and capable of flying. 
June 10, 1962 With young in various growth stages. Bo eggs. 
(Kramer & B) 
March 6 - 7 ? 196^4- Population estimate- 2600 
(Amerson, POBSP) Bo.of nests 1000 
I----- Bo.of yougg —--none 
Remarks : Bo young seen, one dark phase adult seen. 
(Walker) __ Copulating pairs, nests without eggs, eggs, no chicks. ... Most 
Red-footed Boobies were on one egg, or hadnt laid yet.. Also at 
helicopter landing -- a colony of about 150 Red-footed Boobies® 
July 25, 196k 
(Kridler) Red-footed Booby nests were also found in the Chenopodium but 
distribution was much more general [than that of Great Frigatebirds] 
except that they tend to thin out a bit at the high elevations. 
Howver there is a sizeable colony of these boobies on the plateau 
near Miller f s Peak which I shall have to give the name as Miller Plateau. I estimated 
that there was at least 100 nests up here, most of which contained young; a few did 
contain some eggs. Most of the young ranged anywhere from fairly new chicks to those 
with considerable feathering 
■Sept. 23- 2 k, 196k 
(Fleet, POBSP) Counted : kk-9 adults, 68 immatures, and 15 locals. 
Estimated total population-900 
(Kridler) 
Eight hundred to a thousand. We tallied k-50 adults and 68 immatures. 
Fifteen locals still in the nests were recorded. ..The path of these 
I 
rees in groves are utilized to considerable degree as nesting sites 
_ _Eed-_£QQted JBoohiea..__ __ 
March 13-1^*1965 Estimated island total population - 3,500 
(Banko, POBSP) Breeding: 1,700 nests; eggs only, no young. 
Banded —: 50 
(Kridler) _ There were an estimated 1,700 nests on the island and the adult 
population was calculated at about 3,500 birds. The nests contained only eggs and 
were jbuilt in Sida and Chenopodium ta clumps. Most were found on the sides of gullies 
and gulches. About 600imests are located just north of Miller Peak. The largest 
nesting area was on the west slope of West Palm gulch, and also on tbe east and west 
sides of West Gulch and on the east side of West Palm Gulch. Fifteen nesting adults 
were banded on Miller Plateau. This species also uses the tops of the native palm, 
Pritchardia remota as nestin gsites. ... In addition 50 Red-footed Booby nesters 
were banded.... . 
