21 
Ludvig, J. P. 
19 & 
several times while placing it In the nest. About 90 seconds later (l 
looked away to note another pair) I noted this pair eapulating on the 
edge of the nest, A bout of preening followed copulation. 
Several tines I watched the head-up-tall up-ving lifted display 
directed by one at the other bird of a pair. However, there was no 
response in the 3 occasions I observed. These red-foots preen for 
great stretches of time. I recorded one bird preening continuously 
(except for shifting its head's position) for 15 minutes 10 seconds. 
. ’ - . * 
I would not be surprised to record bouts of preening of 25-40 minutes, 
I hove also noted a behavior which suggests that hippoboscid fly or 
ciallophagon bites stimulate a bout of preening. Often with no outward 
sign a roosting booby gives a startled squawk and then begins furious 
work on his plumage - usually a specific place is attacked by the bird 
and twice I watched hippoboscid flys leave the preened area to resettle 
' 
elsewhere. This behavior is one of the most ccaaaon sights in roosting 
of this Booby. 
King reported Matching a a" dark phase mated with and copulating 
with a 9 (light white) phase. As this occurred in a part of the 
colony not viewed yesterday, this brings tht total to 4 dark phase in 
a population of 500 birds. I noted a dark phase sitting singly at a 
nest. 
About 1100 we began to move towards Lihue. We stopped at Malapaa 
Beach seeing no birds of interest but a Class A beach. later we noted 
a White-tailed Tropicbird in one of the valleys, and One Ad 9 Great 
