14 
III. Pelagic 
A. North of Equator 
B. 
1. 
North of 12°N area 
9, 10, 11 Jan; 27, 26 Fe' 
1, 11, 12 March; 28, 29 . 
2. 
12°N area 
12 Jan.; 26 Feb.; 13 Mar 
3. 
Between 12°N and 5°N area 
13 Jan.; 25 Feb.; 14 Mar 
4. 
5°N area 
Ik Jan.; 24 Feb.; 23, 24 
5- 
S. of 5°N area 
15 Jan.; 23 Feb. 
South of Equator 
i. 
Jarvis to Malden 
28, 29 March 
2. 
Starbuck to Samoa 
4, 5, 6, 7, 8 April 
(S.E. Pelagic) 
3. 
Samoa to Southern Grid 
12, 13, 14, 15 April 
. (South Pelagic) 
4. 
Between Phoenix Island 
* 
* 
and Fiji Island (S.W. 
2, 3, 5, 6, 24, 15 (E), 
Pelagic) 
15 (W) Feb. 
The Offshore category includes birds observed in the immediate vicinity 
of a breeding or roosting site or island. Of the three divisions it is me 
most subjective and has been most frequently neglected in discissions. j. 
would include under this heading the following: Activity in the waters one 
to two miles off the beach (usually not logged on day sheets because of 
beach landing operations), and logged activity in close proximity to the 
island where birds are too abundant to be interpreted well quantitatively. 
In general, offshore implies what one would see from a vessel when close 
enough to see the island clearly but not necessarily including w?h&o one 
would find on the island itself. Offshore is the missing link between 
island work and at-sea work. The 13 island sections are qa.alj.talively 
compared in Table 5 and will be briefly discussed in a following secuiCu. 
Where the Offshore category was used to bridge the gap between island 
work and at-sea work, the interisland category introduced here is to dis¬ 
tinguish between the basic components of the at-sea data, l) The 
in which the birds are, for the most part, based on or dependent on a r.earoy 
or islands, and 2) the regions in which the birds are, for the most part, 
independent of land and more dependent on some oceanographic feature or 
features. Interisland includes shipboard observations taken while travel¬ 
ing between islands in the Line and Phoenix groups and while in the vie mi-y 
of the Fiji complex. The division between pelagic and interisland is suo-^ 
jective but, roughly, within 100 miles or so of land the area is ettcnujujiy 
what I term interisland. While these observations include onxy abOuo o.xe- 
eighth of the total diurnal miles they account for about one-third oi me 
total birds. 
The pelagic category includes over 6,000 miles of observations of 
essentially open ocean* More detailed discussions Oi. these areas follow 
