BRITI5HDIW)5 



EDITED BY H. F. WITHERBY, F.Z.S., M.B.O.U. 

 ASSISTED BY W. P. PYCRAFT, A.L.S., M.B.O.U. 



Contents of Number 9. February 1, 1908. 



On Two Supposed Hybrids between Red Grouse and 



Ptarmigan, by W. R. Ogilvie-Grant . . . . . . Page 269 



Notes on the Habits and Distribution of the Cirl Bunting 



in North Wales, by S. G. Cummings . . . . . . 275 



On the More Important Additions to our Knowledge of 

 British Birds since 1899, by H. F. Witherby and N. F. 

 Tieehurst (Part VII.) — continued from page 256 . . 280 



An Incident in the Southward Migration of the Swallow, 



by Commander H. Lynes, r.n., m.b.o.u. . . . . 285 



Notes :— Wood-Pigeon Diphtheria (C. B. Tieehurst). The 

 Down-Stroke of the Wing (F. C. R. Jourdain). 

 " Lviminovis Owls" (Eds.). Chiffchaffs in Shetland 

 (John S. Tulloch). Great Tits Usm-ping Nest of Blue 

 Tits (Grenville N. Temple). Richard's Pipit in co. 

 Dublin. Continental Crossbill in Scotland (William 

 Evans). Little Bunting in Kent (William Eagle Clarke). 

 The Incubation Period in the Cuckoo (Collingwood 

 Ingram). Pintail in Berkshire (Heatley Noble). Wood- 

 Pigeon Swimming (A. Holte Macpherson). The Food 

 of the Black-headed Gull (W. Steuart-Menzies). Notes 

 on the Phimage of a Great Northern Diver and a 

 White-billed Northern Diver (W. R. Ogilvie Grant), etc. 288 



Letters: — Marking Birds (Claud B. Tieehurst). "The 

 Vertebrate Fauna of North Wales " (H. E. Forrest). 

 The Ornithology of Svissex (H. A. Brvden and John 

 Walpole-Bond) ". 298 



Review : — " Birds of Britain " . . . . . . . . 300 



ON TWO SUPPOSED HYBRIDS BETWEEN RED 

 GROUSE AND PTARMIGAN. 



W. R. OGILVIE-GRANT. 



At a meeting- of the British Ornithologists' Club held on 

 the 18th December, 1907,^ I had the pleasure of exhibiting- 

 to the members present two mounted examples of Grouse 

 which I believe to be hybrids between the Red Grouse 

 {Lagopus scoticus) and the Ptarmigan (L. mw^M.s). These 

 specimens show in so marked a degree the characteristics. 

 * Cf. Bull. B.O.C., XXL, p. 36 (1907). 



