CONTENTS 



Introduction . 



Methods of observation. 



Techniques of data recording. 

 Storage and analysis of data_ 



Avifauna of the study area 



Family summary 



Diversity of species. 



Species accounts 



Monthly summary — 



Components of abundance and distribution. 



Islands of origin of sea birds recorded in the study area and 



modes of utilization of the area 



Distance from land^ . 



Analysis of density _ 



Maximum distances of observation. 



Analysis of density by subareas 



Direction of movement 



Daily cycles of activity 



Environmental influences 



Wind direction 



Wind speed 



Air temperature. 



Surface water temperature. 



Surface salinity 



Flock analysis 



Flock abundance 



Flock distribution — 

 Flock composition- 

 Flock participation. 



Flocking tendency 



Summary 



Acknowledgments. 



Literature cited 



Appendix tables 



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FIGURES 



Replicate track in central Pacific Ocean followed during monthly 

 cruises of the Townsend Cromwell , March 1964 to June 1965. Dots 

 represent locations of oceanographic stations. 



2. Numbers of species observed per day and per month and numbers of 

 birds per hour in the study area, March 1964 to June 1965 



3a. Expansion of the range of the Black-footed Albatross in the study 

 area. Birds were recorded at the northern end of the area all 

 winter 



3b. Contraction of the range of the Black-footed Albatross in the study 

 area. Birds were recorded at the northern end of the area all 

 spring — _ 



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