174 BIRDS OF THE BRITISH ISLES. 



Asia. In Northern Europe it is only of rare occurrence. 

 The adult is, above and below, chiefly white, tinged with 

 pale yellowish buff; secondaries, brownish; quills, black; 

 the portion of the head and neck which is bare of feathers 

 is of a yellowish tinge ; irides, deep red ; bill, dark brown ; 

 legs and feet, flesh tint. Length, from twenty-five to twenty- 

 seven inches. 



White Jer-Falcon. 



The \Vhite Jer-Falcon {Hierofalco candicans^ Gmelin), also 

 called the Greenland Falcon, is a rare nomadic winter 

 migrant to the British Isles. It is supposed to be a 

 resident throughout most of the Circumpolar Region, 

 and is casually met with farther south. The adult has 

 the whole of the ground colour of the plumage white; 

 feathers on back and wing -coverts have bold spots of 

 blackish-brown ; quills have subterminal bars of black ; 

 tail has a few dark bars in places ; under parts, spotted 

 here and there with blackish-brown; irides, hazel; bill, 

 bluish near the tip, otherwise yellowish ; legs and feet, 

 light yellow. Length, from nineteen to twenty-one inches. 

 <P- I75-) 



