The Distribution of Birds in Great Britain. 441 



some further details concerning the Capercally. Macgillivray, in the 

 first volume of his ' British Birds ' (p. 143), quotes an interesting passage 

 from the ' Historia Scotorum.' 



At present the bird seems to have become thoroughly re-established 

 in several parts of Perthshire, where it has increased rapidly within the 

 last ten years, and is believed to have spread to the adjoining county of 

 Clackmannan, as I learn from Dr. P. Brotherson. 



TETRAO TETRIX (Linn.}. Black Grouse. 



Provinces I.-VI. VII. ? VIII.-XVII. 



Subprovinces i, 2-6, (7), (9), (11), (12), 14?, 15, 16, 18?, 20-23, 24, 25-35. 



Lat. 50-59. " Scottish " type. Not in Ireland. 



Though found in the extreme south of England, the Black Grouse 

 more properly belongs to the low birch-woods and heaths of the less 

 elevated districts of Scotland. It breeds " occasionally " in Cornwall 

 (Mr. E. H. Rodd}. In Devon, Somerset, Dorset, Hants, Sussex, 

 Surrey, Berks, Worcester (Yarrell}, Shropshire, Stafford, Radnor 

 (Mr. Rocke}, North Wales " introduced and decreasing on the Beswyn 

 mountains near Corwen " (Eytori], Cheshire, Lancashire, and both 

 divisions of Yorkshire, and in all districts to the north of these, extending 

 to Islay, Mull, Skye, &c., but not reaching the Outer Hebrides, nor is 

 it found in Orkney or Shetland. 



The Black Grouse has been successfully introduced in the neighbour- 

 hood of Lynn in Norfolk. Yarrell says that the progenitors of the birds 

 at present inhabiting the heaths of Surrey and Berks were brought from 

 Holland, though the species had previously been known as indigenous 

 to the former county. A single nest found in Northamptonshire is 

 recorded by Lord Lilford (Zoologist, p. 3278). 



Mr Selby describes the Black Grouse as increasing in Northumber- 

 land ; and the same circumstance has been noticed coincident with the 

 increase of plantations in several parts of Scotland. As Thompson 

 remarks, the Black Grouse might probably be introduced to Ireland, but 

 the attempts hitherto made have been unsuccessful. 



LAGOPUS SCOTICUS (Leach}. Red Grouse. 



Provinces V.-XVIII. 

 Subprovinces 13-18, 20-37. 

 Lat. 51-60. " Scottish " type. 



Colonel Newman tells me that the Red Grouse is plentiful on the 

 hills of Monmouthshire. The bird also inhabits Hereford, Shropshire, 

 Stafford, Radnor (Mr. Rocke], and Pembroke (Mr. Tracy]. Breeds 

 in Derbyshire, Lancashire, Yorkshire, and in every county north of 

 lat. 54, reaching the Outer Hebrides and Orkneys, but not occurring 

 in Shetland. 



