LEACH'S STORM PETREL 

 Spring 



Summer 



Fall 



Winter 



Totals 



2,016 



2,844 



3,312 



792 



WHITE-TAILED TROPICBIRD 

 Spring 



Totals 



1,224 



Summer 



Fall 



1,512 



828 



Winter 



1,656 



Figure 29. — Sea bird abundance in subareas in the study area. The squares of the table repeat the 

 geographical layout of figure 28. The upper figure in each square is the density in birds per 10 

 linear miles (18.5 km.) of observation; the lower figure is the estimated population, weighted by 

 the effective range of observation of each species. Density and population figures are daily 

 averages during each season. — Continued. 



76 



