RED-FOOTED BOOBY-Annotated List 
RECKER 
June 17-20,23, 1923 
(Wetmore) 
June 17-195 1 Common. Rests in some cases are just built., a few 
contain eggs and the majority young one third to half grown. I saw a young bird almost 
adult with only a trace of down on the head. There is something definitely serpentine 
in the appearance of the adult as they protrude and retract their necks when disturbed, 
June 20 1 About ICiO pairs here. 
June 29* ho change 
July 26, 196k 
jtridler) Red-footed Boobies were perched on the upright stones... 
KHeavy growth of Chenopodium about a foot to a foot and a half in height ..on the 
slope of Flagpole Hill ] is used as nesting sites by Red-footed Boobies. Red-footed 
Booby nests contained eggs to down young. • • • On the north side of this hill 
[the eastern most peak] grows some Chenopodium in which there were about 50 Red¬ 
footed Booby nests... 
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.September 257 1961 Actual count Adults on nest- 7k 
(Fleet - POBSP) on eggs-27 
—- ——— —— on chicks-22 
unknown-25 
Adults unoccupied-8k 
(ess = capable of flight) Immature - 6k 
(* large dept.young) Local-23 
Total population estimate-650 
(Kridler) This Chenopodium £ grows mostly at the higher parts all over the slopes] 
is used extensively ...by Red-footed Boobies for nesting sites. •••• [Count of?j 
8k adults on the nests, 27 of the nests contained eggs and 22 contained a chick; 
we were unaLle to check the nests of 25 others. In addition to the above birds on 
the nest we found 23 nests which contained chicks which were quite large. Also 
Observed were 6k immatures capable of flight. 
March 15, 1965 
(Bauko, POBSP) Estimated total island population-1, 000 
Breeding -- most on nests with eggs. 
(Kridler) Estimated 500 nests. Actually counted kl2. All the adults 
were on eggs. Rests on the Cbenopodium and principally on the north slopes 
of the island. Only one adult was banded with Ro. 767-00302. 
Sept. 10-11,1966 
(Kridler) Ro count was made. Most of the birds appeared to be immatures 
and an "estimated 95 $ had reached flight stage. Less than tendowny young were 
noted . 
March 10, 1967 
(Hackman, POBSP) (Rpt) Population estimate* 350 adults, 3 eggs. (Rotes) Population 
about 175 pair. Many birds on nests courting or carrying vegetation, 
All nests had fresh vegetation. Of 100 nests checked only 3 had eggs - only measured 
one of these. Birds preferred to nest on Chenopodiuin and used this species for the 
nest. There were, a few nests scattered round on the old Polynesian ruins but most 
were found along one slope in bush g rowths of Chenopodium. .... Only 3 eggs observed 
by total field p ar ty s 1 only found one of those. 
