RED-TAILED TROPICBIRD 
Two collected 
Nearly all were observed in the western portions of this cruise, 
with the largest numbers south of 10 °S. 
WHITE-TAILED TROPICBIRD 
Only three were observed in the extreme southwest portion of the 
trip. 
RED-BILLED TROPICBIHD 
Observed only in the vicinity of the Galapagos Islands and off the 
coast of Mexico. 
RED PHALAROPE 
These birds were present in very low numbers throughout the trip. 
Several small flocks (not over 300 total) were observed around the Gala¬ 
pagos Islands. 
SWALLOW-TAILED GULL Two collected 
Two of these Galapagos-breeding birds were collected over a Wesson 
oil slick about 350 miles west of the islands. This may be the western¬ 
most record for this bird, as Murphy's Oceanic Birds of South America 
gives records only to 250 kilometers southwest of the Galapagos. 
DATA COLLECTING ACTIVITIES 
Standard EASTROPAC environmental data concerning weather, productivity 
plankton, micronekton, temperature and salinity with depth, and chemical 
nutrients was collected. In addition, air samples for C 02 determinations 
were taken, and current studies were carried out on the equator. 
