occupied by Birds in Incubation . 



71 













o d P 

 o o 3^ 



2 a '^ 



OS© 



lis 



t !^ C 



S CO 

 K5 O 



: o ~ ^ 



- - '^ J^ O) :^ aJ 



; p"^ -p 

 :0 s*^ 





ce 

 .2 03 





Pq Bq ftq 



