EXPLANATION TO PLATE IX. 



Pigs. 1, 2, 4. Archibuteo ferrugineus, Lichtenstein. Ferruginous Rough-legged Hawk. 

 Pigs. 3, 5. Aquila chrysaetos, Linnaeus. Golden Eagle. 

 Pigs. 6, 8, 9. Palco rustioolus gyrfalco, Linnaeus. Gyrfalcon. 

 Pig. 1. Haliaeetus leucocephalus, Linnaeus. Bald Eagle. 



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