found nestlings on June 10, 1962. 
PftRTY' 
The POBSP trip of March 6, 1964 estimated 1000 nests in various stages 
5 c//?v*y F#*ry 
of construction. No nests with eggs or nestlings were found. The tr 4p of 
March 24, 1965 estimated 1700 nests with eggs only. Fifteen large nestlings 
and 68 immature birds were counted September 23-24, 1964. 
The breeding cycle of this species on Nihoa, based on the nine records 
X ? 
presented above,^indicate^egg-laying beginning in March and fledging 
m 
August and September. This agrees closely with that of Kure Atoll at the 
northwestern end of the Leeward island chain (Kure Island Account). 
Other Specimen : USNM 300912, cT, June 12, 1923; USNM 300915, cf, June 12, I923. 
Eggs: USNM 39714, June 15, 1923; USNM 38715, June 15, 1923; USNM 38716 
June 1923; USNM 38717, June 15, 1923; USNM 38718 June 15, 1923; USNM 38719 
June 15, 1923; USNM 38720, June 15, 1923- 
