BIRDS OF THE BRITISH ISLES. 



arctic Blue^tbroatefc IRobtn, 



THE Arctic Blue -throated Robin (Etithacus suecica, 

 Brehm) is an abnormal spring and autumn migrant to the 

 British Isles. There are, says Seebohm, three forms of 

 this bird: First, the Northern or Arctic form, with the spot 

 in the centre of the throat red ; secondly, the South Euro- 

 pean form, with the spot in the centre of the throat pure 

 and silky white; and thirdly, the form of which the throat 

 is uniform blue. Length, about five inches. 



