5 (C /'L 
Preliminary At-Sea Survey «93S&§$SSK5miE8 
February-March arid April 1966 
Dc*l (y^C$ — flcr-'tf* <sH SouituZsi^ (5-7, ( ^ 
This report summarise* observations made by Robert DeLong, Paul Woodward, and 
Richard Maze between Oahu and 3.1, Grid No. 1 during periods 26 February to 1 March 
and 8 through 9 April 1966. Watches, totaling 97.5 hours (40.2 in February-March 
anti 47,3 in April 1 ', wore held daily from sunrise to sunset. During this time 83 O 
miles were tavoled—-375 in Fobruary-March and 455 in April. 
Generally favorable weather prevailed throughout both periods. 
during February-March 451 birds of 11 species were seen. A total of 1041 
birds of 22 species were redorded in April. Terns comprised 63 % of the February- 
March total while they were only 3 7% of the April total. She; rwater-Petrels ac¬ 
counted for $?.% of the April total and only 26% in February-March. All groups 
showed an increase during the period. 
Migrating Sooty Shearwaters accounted for most of the increase in the 
numbers between the two periods, /edge-tailed Shearwaters were seen for the 
first time in April. Unusual birds included a Long-tailed Jaeger, A Mottled 
Petrol, two phalaropes (possibly Red phalaropes), and two possible Pink-footed 
Shearwaters. 
No birds were collected. 
