EXPLANATION TO PLATE IX. 



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

 Figs. 3, 5. Aquila clirysaetos, Liniiceus. Golden Eagle. 

 Figs. 6, 8, 9. Falco rusticolus gyrfalco, Linnaeus. Gyrfalcon. 

 Fig. 1. Haliseetus leucoceplialus, Linnaeus. Bald Eagle. 



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