1.5n 



Bulwer's Petrel 



Leach s Storm Petrel 



16-17 1819 2021 2223 24 25 26-27 28 29 

 (3) (22) (lOO) (4)l) (549) (220) (9) 



16 17 18 19 20 21 22 23 24 25 26 27 28 29 

 (3) (22) (lOO) (41 1) (549) {220) (9) 



Red-tailed Tropicbird 



Ql 1 p.— , r""i F--, f- i 1 1 I , 



P 16 17 18 19 2021 2223 24 25 26 27 28 29 



CO 



oe. 



LU 



Q- Great Frigatebird 



00 



Q 

 Ql 



30 



.15' 



White tailed Tropicbird 



16 17 1819 2021 22 23 24-25 26 27 28 29' 



Brown Noddy 



16 17 1819 20 21 22 23 24 25 26 27 28 29 



16 17 1819 20 21 22 23 24 25 26-27 28 29' 



White Tern 



Sooty Tern 



16-17 18 19 20 21 22-23 24-25 26 27 28 29 



AIR TEMPFRATURE (°C) 



16-17 18 19 20 21 -22 23 24 25 26-27 28 29 



AIR TEMPERATURE CO 



Figure 33. — Number of birds seen per 30 linear miles (55.6 km.) of observation at various air tem- 

 peratures in increments of 2° C. The number of samples at each increment is in parentheses under 

 the upper figures, but pertains to all figures. — Continued. 



90 



