BRITBriDIRDS 



WiTHWHICH WAS INCORPORATED IN JANUARY, igij, " ThE ZOOLOGIST." 



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



ASSISTED BY 



Rev. F. C. R. Jourdain, m.a., m.b.o.u., h.f.a.o.u., and 

 Norman F. Ticehurst, o.b.e., m.a., f.r.c.s., m.b.o.u. 



Contents of Number to. Vol. XV., March i, 1922. 



Observations on the Breeding-Habits of the Merhn. — 

 III. Rearing of the Young. By W. Rowan, m.sc, m.b.o.u., 

 F.z.s. . . . . . . . . . . . . . . . . 222 



The " British Birds " Marking Scheme. Progress for 1921. 



By H. F. Witherby 232 



Notes : — 



Notes from Holy Island, Northumberland, 1920-1. (W. G. 



Watson) .. .. .. .. .. .. .. .. 239 



Waxwings and Bramblings in Manchester (Herbert Massey) 239 



Garden-Warblers in Perthshire (Charles G. Young) . . . . 239 



Size of Swallow Broods in 192 1 (H. W. Robinson) .. .. 240 



Great Spotted Woodpecker in Perthshire (Charles G. Young) 240 



Hen-Harrier in Anglesey (J. A. Pownall) .. .. .. 241 



The Gadwall in Westmorland (H. W. Robinson) . . . . 241 



Great Crested Grebes in Perthshire (Charles G. Young) . . 241 



Great Skua in Dorset (Rev. F. L. Blathwayt) .. .. 242 



Little Auk in Shropshire (H. E. Forrest) . . . . . . 242 



Spotted Crake in Anglesey (H. E. Forrest) .. .. .. 242 



Short Notes :^ 



White Wagtails in Yorkshire. American Yellow-billed 

 Cuckoo in the Scilly Islands. Cuckoo in December in 

 England. Western Mediterranean Shearwater in Hamp- 

 shire . . . . . . . . . . . . . . . . 242 



Letters : — ■ 



Former Breeding of the Osprey in Ireland (Geo. R. Humphreys) 243 



Share of Incubation in the Turnstone (A. H. Paget Wilkes) . . 243 



Oystercatchers opening Oysters (Dr. J. M. Dewar) . . .. 244 



Albinistic Gulls and Ivory-Gulls (Geoffrey C. S. Ingram) . . 244 



