2 
were also comparable to those for May. As in May, a noticable concentration 
of birds was encountered in the same area northwest of Johnston, indicating 
that this area is probably being utilized by birds from Sand-Johnston. 
Since numbers of Jarvis Island birds have consistently been recorded in 
the area northeast of the Line Islands, possibly most of the movement 
from these islands is to the north and east. If this is true, the present 
paucity of birds in the grid might indicate a similar distribution of 
Johnston Island birds, in which case even greater numbers may be expected 
in July northeast of the island in the area which has not been sampled 
these three months. 
Approximately the same patterns of species distribution and population 
densities have been observed for all three visits to the area northeast 
of the Line Islands. However, many more birds were encountered this month 
on the path between Palmyra and Johnston Islands. These included numbers 
of dark phase Wedgetails and immature Sooty Terns, indicating a northward 
post-breeding dispersal of some southern birds. 
Only 2U species were recorded in June, compared to 35 in May. This 
was reflected in lower average numbers of species for all areas. There 
also was a greater tendency for birds to occur in flocks outside the grid 
t 
and for the flocks to be larger, indicated by higher birds per sighting 
figures. 
Following are discussions of the principal species recorded outside 
the grid. Numbers and distribution of most other species did not differ 
significantly from May. 
•JIW II I III 
:« ' 
™ • ’7 
lii'UlMWPJI'M UIW 
