192 ACCIPITRES. 



FALCONING. 



172. FALCO GYRFALCO. 



(JER-FALCON.) 



Falco gytfalco, Linneus, Syst. Nat. i. p. 130 (1766). 



The Jer-Falcon is a large bird (wing from carpal joint 16^ to 

 14 inches) . It differs from the Peregrine in having the outer toe no 

 longer than the inner, and in having the general colour of the tail 

 not darkened towards the tip. It is not known which of the various 

 races of the Jer-Falcon occasionally strays as far as Japan. 



Figures : Dresser, Birds of Europe, vi. pis. 367 to 371. 



Mr. Henson informs me that he procured an example of one of 

 the various races of Jer-Falcon at Hakodadi. 



The Jer-Falcon is a circumpolar species, varying considerably in 

 different parts of its range. 



173. FALCO PEREGRINUS. 

 (PEREGRINE FALCON.) 



Falco peregrinus, Tunstall, Om. Brit. p. 1 (1771). 



The Peregrine is a small Jer-Falcon (wing from carpal joint 1 5 to 

 12 inches) . It differs from that species in having the tail darkening 

 towards the tip. 



Figures : Dresser, Birds of Europe, vi. pi. 372. 



The Peregrine was recognized by Pallas as one of the birds found 

 by S teller in the Kurile Islands (Pallas, Zoogr. Rosso-Asiat. i. p. 326), 

 and has recently been found by Mr. Snow to be very common there 

 in summer (Blakiston and Pryer, Trans. As. Soc. Japan, 1882, 

 p. 185) ; but it is a resident in the more southerly Japanese Islands. 

 There are examples from Hakodadi both in the Norwich Museum 

 and in the British Museum (Whitely, Ibis, 1867, p. 194), and there 

 are four examples from Yokohama in the Pryer collection. The 

 examples obtained by the Siebold Expedition (Temminck and 

 Schlegel, Fauna Japonica, Aves, p. 1) were probably procured near 

 Nagasaki. It has been recorded from the most southerly group of 



