X 
/ 
Blue-faced Booby 
A few scattered sightings were made in line eastern two-thirds of 
,ne cruise tracK. 
Brown Body 
Bound only close to Johnston Atoll and the Hawaiian Islands. 
Bed-footed Body 
Bed-foots were the second most abundant species seen on the cruise. 
The observed species distribution centered around the nesting islands 
and was relatively consistent in this regard. Virtually no subadults 
found except in the vicinity of Johnston Atoll (see Map 8 ). 
While in the grid pattern around Johnston Atoll we paid particular 
attention to activity and directional movement of Bed-foots. Data are 
summarized in Map 11 . During approximately the same period POBSP per¬ 
sonnel (B. Schreiber and J. Tordoff) on Sand Island recorded the activity 
and directional movement of the birds there. In talking with Balph 
Schreiber it seems that the patterns observed at sea and those on the 
island correlate fairly well. According to island -observations, Red- 
foots began leaving the roosts well before sunrise. This was not cor¬ 
roborated by at-sea personnel due to the lack of visibility in the pre¬ 
dawn hours. By 0730 all Bed-foots which were going to leave the island 
(estimated h, 500 ) appeared to have done so. Bo directional exodus was 
seen at sea. Prom the island it appeared that many went to the west and 
northwest and that few went to the north and northeast. It was not de¬ 
termined how many went south or southeast. 
the remainder of the day what boobies stayed on the island; 
During 
appeared to remain in the vicinity. Observations at sea suggested that 
those which left had two main feeding areas. One existed 35 miles and 
to the south and southeast of the atoll; this observation is base 
region 
on frequent sightings of feeding and resting groups. The second 
was never observed, but a hypothesis suggesting a feeding area to the 
northwest is based on sightings of birds heading towards the island in 
the evening when the ship was northwest of the atoll. Observations 
the island suggested that many boobies returning to roost in the evening 
-f* v» 
were 
:ommg 
few from ^ 
‘rom between southwest and northwest of the islands and a 
north and northeast. Ho data w Y as collected to determine 
the extent of movement from the south and southeast. Little movement 
was observed before an hour before sunset, with the majority of the birds 
arriving after sunset. The observations at sea during this period of 
day were made on two different days in two different areas. On the 
evening of the 12 th the ship was east and northeast of Johnston and we 
saw low numbers of Bed-foots, most apparently headed in the general 
direction of Johnston. The evening of the 13 th the ship was west and 
northwest of the island and we saw fairly large numbers heading toward 
the island. Thus, from at-sea data collected during evening hours of 
this cruise all we can say is that few boobies were heading toward the 
