BLUE-GRAY RODDY 
Annotated List 
RXHOA 
Dec. 9-l6 ? 1961 
(Kramer) 
Very wary and nervous. Rot too common. 
Paired, often seen 3 at a time which indicates last season®s 
young. Rest in shallow caves or cracks in fliff faces in lower 
sheltered valleys. Rone seen soaring over summitt ridge. 
June 10, 196"2 
(Kramer & B) 
Abundant in cliffs; one dead chick seen. Adults breeding, 
March 6 - 7 ? 1964- 
(Amerson, POBSP) 
(Walker) 
Population estimate 
Ro. of nests 
Ro. of young - 
1000 * s 
yes 
present 
Remarks® Eggs to 
fully fledged chicks 
___ Eggs to fully fledged. 50%-50%neggs and young. Resting in holes 
on rock outcropping. Bones and stick nest. ... Blue-grey Roddy, 
seem to be using the entire Rorth face for nesting , roosting... Blue-gray Roddies 
nesting in rock holes on ridges. Eggs up to flying young seen. Birds tame when 
young molested.Banded Blue-grey Roddy adults, young.. 
(Kri'dlerj Blue-gray Roddies were failly common, especially along the cliff 
July 25, 1964- faces or the steep sides of the rocky outcroppings of the sloping 
south side of the island. 
.Sept. 23- 2 4, 196k 
foeet,POBSP) 
Kf idler) 
Estimated total population-s 150 
_ The Blue-gray Roddy population was estimated to be at least 
300 birds. This, however, is also a very rough guess and may be 
quite low. Many nests along the top of the cliffs just above the rock shelf of the 
south shore of the island, and others in little holes and depressions in the rim 
rocks found clear up to the very top. As with other terns, only one egg is laid and 
the nests contain eggs to young capable of flight. 
March 13-14,1965 
(Banko, POBSP) 
(Kr,Idler) 
Estimated island total population- 
Breeding: 250 nests; 5 % with young. 
Banded--: 5 
550 
__ Estimated about 250 nests with a population of approximately 
500 to 600. These were widely scattered all over the island. 
They seem to prefer to nests in the rock faces of small cliffs as well as the sheer 
faces of the north and west side. About 90% of the nests fexamined had eggs and the 
remainder chicks. The brood patch of this individual was on the chest as way amny 
other tern species. [??] 
July 28 - Estimated number--- 2,500 + 50 % 
August 1, 1966 Ro. of nests- --T- 
(Heiden, POBSP) Ro. of young--—-- - 
Banded- none 
Breeding status undetermined due to inaccessibility of this species 
on northern cliff face# Six - eight birds observed roosting each night 
on ledges above lava shelf on southern edge of island 200-300 yards I 
east of camp# No nesting activity noted, though these birds occurred 
in-pairs# .- 
