BIRDS OF NEW YORK 



Memoir 12. N. Y. State Museu 



Plate 50 



GYRFALCON 

 Falco rusticoius gyr/alco Linnaeus 



WHITE GYRFALCON 

 Falco islandus Briinnich 



BLACK GYRFALCON Falco rusticoius obsoletus GmeVm 

 All i nat. size 



Olaltized bv Microsoft® 



