62 BIRDS. 
Beverley, one about 1869, seen in the flesh by Mr. W. W. 
Boulton (Cordeaux, Birds of Humber, p. 81). 
254. Perdix cinerea Zath. Partridge. 
Resident, generally distributed, abundant. Mentioned as 
scarce at Halifax and in Upper Ribblesdale. 
255. Coturnix communis Zoznat. Common Quail. 
Summer visitant, breeding regularly in limited numbers, in 
Holderness and at Boston Spa, and irregularly in many 
other localities in the county. Has occurred occasionally 
in midwinter. Many records show that this species was 
formerly much more frequent, and Mr. A. Strickland in- 
formed Mr. Allis (1844) that they used to be taken in nets 
near Bridlington. 
256. Ortyx virginianus (Z.). Virginian Colin. 
Accidental visitant from Eastern North America, of extremely 
rare occurrence. 
Cottingham, male, ‘a few years since,’ in the collection of Mr. 
Boulton (Cordeaux, Birds of Humber, 1872, p. 83), 
Fam. TETRAONIDZ. 
. 
257. Lagopus mutus Zeach. Common Ptarmigan. 
258. Lagopus scoticus (Za¢h.). Red Grouse. 
Resident, abundant on all the high moors, and in severe 
winters sometimes occurs as a straggler in the most unlikely 
localities. The Rev. H. H. Slater informs me—on the 
authority of his uncle, Mr. T. Horrocks, of Eden Brows, 
Carlisle—that towards the end of October every year there 
is a migration of packs of grouse from the Duke of Cleve- 
land’s moors, near High Force, in Upper Teesdale, to Mr. 
Horrocks’ moors, at Alston, in Cumberland (a distance of 
twenty miles), where they remain until the end of the season, 
and then return to their own county. A large proportion 
of these migrants are hens, and they are different in size 
and plumage and readily discriminated from the Alston 
birds, being only two-thirds their size and weight, and their 
plumage more speckled and yellow. 
