2 
fleet . P. 
1964— notes by species ~\M r * 
Bl\tP — faced Booby 
January TO- -Two pair in NAT with eggs under incubation on nest scrapes. One pair 
behind oil tanVs copulating this morning. 
''ales have a high pitched wheeze call and 99 have e lower pitched honV. 
Immatures algo have honk. Difference in bill color— male brighter yellow 
(comparative characteristic). 
February 7 — One B ue-faced Booby d in the Lfyssn study area observed sitting on 
abandoned Laysan egg. hen frightened of r of nest bird returned and sat on egg 
£fter nudging it with his beak. 
These birds lay 2 eggs f generall sit for 12? hour periods. 
February 10 — Five Blue-faced Eooby nests in NAF. One has a single egg, others 
2 . 
February 11— - fix nests in NA>' t two with single egg. One nest in FA— 2 wit r. 
| * 
single egg. Don't build nest, just bore a reas of sand, no veg. 
February 21-- First chick appeared. Ho down, eyes closed. Aitricial. 
February 28 — Second chicV hatched in nest with first chick. Si we ration about 4 to 1. 
February 29— Second chic^ gone — estfn? 
V^rch 19 — New chick hatched in nest number 6. Observed 9 at a scrape picking up 
and dropping twigs — in preparation to laying of egg. Difficult to move from 
scrape, (did lay). 
