occupied by Birds in incubation. 



^ 



rS a 



8 ^ 



;5 o o 



in 



2 1' 



o 







'^^t^ § 



_Q •- O 



d) . (D . 03 . rrt r/) CO 



O O <B HOP 



O O 



n3 

 CO 





<sl ;^ 



f^ 





-2 -3 





-5^ S S 2 =P-i 





5" • 03 03 



V . 03 03 



o -Cor; 



s ■ =* s "S 



:^ 5Ph 

 § i-S It 



a: a3 ce -« 5 



S -i^ 03 ^^ 3 



S a3'> o 



,1—1 y 'O 



3 ^ 





o '^ -^ "> 



-SO sO 



^ ^S b 

 s a '^ fe 



S ^ =s o 



^r 



f2 



