YERFALCONS. 577 
as the White Gyrfalcon; it is found in Hungary, Russia, Styria, 
and Greece, where it makes its appearance after the arrival of the 
birds of passage. It is also easily trained for hawking. 
Fig. 265.—Jerfalcons. 
In the first rank of Falcons proper must be mentioned the 
Peregrine Falcon (Falco peregrinus), often designated by the names 
of the Common Falcon and the Passenger Falcon. As its name 
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