Newell 's Shearwater 



Juan Fernandez Petrel 



lOn 



140 



' 21 

 60 



23 

 317 



C3 



Black-Winged Petrel 



f^^ F?n P =^ 



22 

 140 



23 ' 

 317 



24 

 453 



Kermadec Petrel 



26 ' 27 ' 

 225 45 



Q. Bulwer's Petrel 



CO 



a 



«2I 

 15 



21 ' 

 60 



Leach's Storm Petrel 



= 21 '21 22 23 24 25 26 27 



15 60 140 317 453 432 225 45 



Red-tailed Tropicbird 



= 21 

 15 



25 

 432 



WATER TEMPERATURE (°C) 



White tailed Tropicbird 



WATER TEMPERATURE (°C) 



Figure 34. — Number of birds seen per 30 linear miles (55.6 km.) of observation at various water 

 temperatures in increments of 1° C. The number of samples in each increment is given below the 

 temperature. — Continued. 



93 



