Fauna of Shetland. 7339 



additions to the native flora, yet their first visits must have been 

 caused either by migratory instinct or stress of weather, and in many 

 instances doubtless the former influence was at work. I have, when 

 far distant from land, observed various finches flying seaward in the 

 teeth of a strong breeze, and this not at any definite period of migra- 

 tion. By this vagrant impulse only can I account for the occurrence 

 of such birds as the hoopoe, rosecoloured pastor and turtle dove, in 

 the most northern of the Shetland Isles, and in the beginning of 

 autumn. 



Falco chrysaetos. Occasional, now rarely seen. 



F. albicilla. Permanent. Eyries still exist on the Noss Herma- 

 ness, Rona's Hill, Graveland and Fetlar. 



F. haliaetus and F. islandicus. Occasional. 



F. peregrinus. Permanent. 



F. subbuteo. Summer. 



F. aesalou. Permanent. 



F. linnunculus. Permanent. This and other members of the hawk 

 tribe are locally designated "maalin." 



F. palumbarius. Occasional. 



F. nisus. Permanent. 



F. milvus. Occasional. 



F. buteo and F. aerugiuosus. Winter. 



F. cyaneus. Permanent. 



Strix bubo. Occasional. 



S. brachyotus. Occasional. Though this species breeds in Ork- 

 ney, I have not heard of its doing so in Shetland. ^ 



S. flaramea. Occasional. 



S. aluco. Occasional in summer. 



S. nyctaea. Formerly breeding in Unst, but now a rare visitor. 

 Mr. Gatherer, of Lerwick, kindly gave me the head and foot of one of 

 these fine birds which had drifted ashore in a decayed state. The 

 local name is " katyogle " or " haarfang." 



S. passerina ? Occasional. Should not this be S. Tengmalmi, 

 which is the northern species, S. passerina not occurring, according 

 to Temminck, above 55 deg. N. lat. ? 



Turdus viscivorus, T. pilaris, T. iliacus and T. musicus. Occasional. 



T. merula. Permanent, at least in intention ; the cats, however, 

 usually interfere with this arrangement, the only shelter being in 

 gardens attached to dwellings. 



T. torquatus. Occasional. 



Sylvia rubecula. Winter. Can this untimely appearance be 



