OOLOGY OF NORTH AMERICA . 



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1, 8. CATHARTES AURA 

 3,4.. CATHARTES ATRATUS- 



5. ASTUR ATRICAPiLLUS. 



6. BUTEO MONTANUS. 



7. BUTEO CALURUS. 



8 9. 10. BUTt;0 PF.NNSYLVANICuS. 



