Later that evening a single immature Common Noddy was observed roosting 
on a Tribulus plant at the southwest end of the island southeast of the 
largest concentration of nesting Brown Boobies. Still later that night 
Balcomb found five noddies roosting with the Sooty Terns in the colony 
with flying young at the northeastern end of the island. 
The four birds collected were all adult males with fully feathered 
broad patches and inactive to slightly enlarged gonads. All four birds 
were also molting in the primary series and in each of them molt was 
far along. (Primary molts respectively 60% , 74%, 85 % and 97 % complete 
with the bird with the largest testis (8x4 mm.) being the furthest 
along in molt) 
Blue-gray Noddy Estimated population —-- 
( Procelsterna cerulea ) Specimens collected —----- 
A single bird was seen roosting along the rocky beach at the south¬ 
east end of the island on 16 August. A Blue-gray Noddy collected in 
the same area the succeeding day was probably the same individual. 
The bird was an adult female with no brood patch, regressed gonads, 
and almost completed primary molt* (primary molt $6% complete.). 
