SIO 11 PRELIMNARY REPORT AT-SEA SURVEY 
24 January to 19 March 1966 
NON-GRID ONLY 
This report covers the observations and collections made 
at-sea by POBSP personnel on the Southern Island Cruise # 11 
during the period 24 January through 19 March 1966. During 
this period 341.6 hours of diurnal observations and 3*271 
miles were covered. A total of 7*796 birds of 36 species 
were recorded and 101 birds representing 20 species were 
collected (Tables 1 & 3). Periodic nocturnal observations 
amounting to 79.2 hours and covering 820 miles were completed 
throughout the cruise (Table 1 ). A total of 334 birds were 
recorded during nocturnal observations. Only two birds were 
collected during nocturnal operations. 
The Smithsonian POBSP team consisted of Richard S. Crossin 
(in charge of at-sea operations), Max C. Thompson (in charge 
of island operations), Robert DeLong, Brian Harrington, Nor¬ 
man Heryford, Dayle Husted, James Lewis, Frank Smith and Jeff 
Tordoff. Tordoff returned to Honolulu from Canton Island on 
1 4 February. DeLong returned to Honolulu from Pago Pago, 
American Samoa on 21 February. The SIC 11 cruise was made 
aboard the USNS SHEARWATER (T-AG 177). Excellent cooperation 
♦ 
and assistance were received from the officers and crew members. 
The SIC 11 cruise track (Figure l) was essentially the 
same as that followed on SIC 9 during the period 7 September 
through 5 November 1965. For purposes of comparing the avi¬ 
fauna encountered during the two cruises, the track can be 
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