4 
C 
island from north and eas 
nor t hw e st and s outlawest. 
tions south or southeast 
also could not determine 
t and thai many moved toward land from the 
We had no opportunity to make evening observa- 
of the island. Observations from the island 
if the boobies arrived from south, southeast, 
or eas t. 
These observations demonstrate that this type of coordinated survey 
has obvious potential. With a ship working offshore and personnel on 
p v- 
CLll. 
island much of the daily dispersal of birds from an island would be de¬ 
termined. With freedom to maneuver the ship as needed to establish 
exodus and return flight lines, and with additional surveys to determine 
how far these lines extend, feeding dispersion from a seabird colony 
could be determined. The writer suspects most birds leaving the island 
are headed for seasonally variable feeding areas. With the collection 
of oceanographic data as well as good shipboard bird observations these 
areas could be delineated and possibly explained. 
One adult female Red-footed Booby with band number 757-29135 0 Dar ^- 6 ^ 
Trench Frigate, May/june r 67) was shot from the mast of the ship at 
l8°35' W; ifi^lS 1 W, and preserved as a specimen (field number 5*0801). 
Great Frigatebird 
A few 7 scattered sightings were recorded throughout the survey. Sur¬ 
prisingly, very few were seen in the vicinity of Johnston where close 
to a thousand are nesting and roosting. 
Ruddy Turns tone 
Three sightings were recorded, two of which were single birds far 
at sea. Whether or not these were migrants is impossible to say. 
Pomarine Jaeger 
Found uncommonly in the vicinity of the main Hawaiian islands. 
Sooty Tern 
The distribution for the cruise is shown on Map 9; the directional 
movement patterns in the Johnston area are shown on Map 12. Virtually 
all of the sightings were of birds with adult plumage pattern; less than 
five ixnmatures were seen throughout the cruise, and only tw T o speckled 
birds were seen. Wo doubt more speckled birds were present but speckling 
is visible only when seen at a close range. 
In the Johnston area,observations were maintained in an attempt to 
determine dispersal from the island. Basically the feeding areas and 
travel routes were the same as described in the Red-footed Booby account, 
and the same conclusion holds true. Insufficient time was available to 
determine the movements, but a longer survey of the same type with 
greater freedom of ship movement would be invaluable. 
