( Lobipes lobatus). Ninety-five percent of the total number of this species 
were noted on 13 February near the Galapagos Islands. 
Phalaropes were almost totally absent south of 5°S. 
Pomarine Jaeger ( Stercorarius pomarinus ) 
This was the only positively identified jaeger species, constituting ^-8 
percent of the total number of Jaegers observed. Color phase totals were 
as follows: 15 light phase, 18 dark phase, 1 intermediate phase and 2 
unrecorded. Color phases were evenly distributed over the survey area. 
Jaegers were not observed anywhere in the vicinity of the Galapagos 
Islands. 
Skua (Catharacta skua ) 
One individual of this species was observed on 31 January at 6 °N 82°W 
in a large feeding flock of Wedge-tailed Shearwaters, Least Terns, Colum- 
bian (Brown) Boobies and Pomarine Jaegers. 
Swallow-tailed Gull ( Creagrus furcat us ) 
Twenty-five of this species were observed on 12 February north of the 
Galapagos Islands, twenty-four of them in a single flock sitting on the 
water. Eight young birds were distinguished by the white head and neck 
streaked with brown. 
Sooty Tern ( Sterna fuscata) 
This species was relatively scarce in the survey area. All of those 
observed were adults, the largest concentration being a flock of fifty 
noted on 19 March at 8 °N 95°W. Only four individuals were observed south 
of 5°S. 
Least Tern ( Sterna albifrons ) 
This species was observed only north of the equator. Nearly eighty- 
five percent of the total number observed occurred on ^ February at 12°N, 
88 °W, and 55 percent of these were in a single mixed-species feeding flock. 
