Comparative Breeding Data -- Laysan and Lisianski 
Date of Population and Breeding 
Survey Data -- Laysan _ 
BLUE-FACED BOOBY 
mid small numbers, 1 n/e 
Feb. 
1963 
Population and Breeding Relationship of Lisi- 
Data--Lisianski _ anski cycle to Laysan 
500 , mostly e, but re¬ 
cently hatched yg, sdy, 
and Idy.also present 
Initiation at least 
several “weeks earlier. 
First egg of season 
laid nearly 2 months 
earlier. 
