SMITHSONIAN GRID - June 1?65 
Numbers of birds within the grid remained unusually low in June. The 
total of $h9 was slightly less than that for May. However, only two con¬ 
centrations of birds were found, in the areas nearest to Johnston Island 
(see attached map). Eighty-two percent of all birds in the grid were in 
these areas. These areas were not covered by diurnal observations in May. 
Therefore, population densities over most of the grid are actually con- 
f 
siderably less than in May. The data indicate that most birds utilizing 
areas south and west of Johnston Island in June remained within 100 miles 
of the island* 
A total of 337 Sooty Terns were seen, comprising 6l^ of all birds 
within the grid. This total is nearly identical with that for May, only 
1/3 the number present in April. However, no Sooty Terns were seen on 
two days this trip and only one on a third day (Table i). Immature birds 
were observed within the grid for the first time this year. Two immatures 
with orange streamers were seen (Table 8,)* 
Wedgetailed Shearwaters increased in numbers from 20 in May to 78 in 
June (lh% of the total), still unexpectedly low. However, this increase 
was entirely in dark phase birds (56), indicating that they were members 
of dispersing southern populations rather than individuals from Sand-Johnston 
The presence of these probable southern birds in the grid in June is in 
contrast to the apparently well-defined separation of the two populations 
