*VI INTRODUCTORY NOTE 



(H. r. WiTHERBY, assisted 

 by N. F. TiCEHURST and 

 F. C. R. JOURDAIN. 



., J ; E. Hartert, assisted by 



Distribution— Abroad ^ ^ (^ ^ Jourdain. 



Migrations N. F. Ticehurst. 



Illustrations. The illustrations, both text and plates (coloured 

 and black and white), are intended solely as aids to identification. 

 It is proposed to give full figures of certain nearly allied forms as 

 well as of those juveniles of species breeding in the British Isles 

 which differ considerably from the adults ; otherwise the illus- 

 trations will be of some part of a bird, chosen in each species to 

 show some characteristic feature. 



Additions and Corrections. Attention will be drawn from time 

 to time on the cover to important additions or corrections during 

 the progress of the work, and full details of such additions or 

 corrections will be given in the last part, so that the work when 

 complete may also be up to date. Part I. was printed before the war, 

 but its issue was suspended. Slight alterations in the distribution 

 of some species are necessitated by observations since published, 

 and these details will be found on the cover. The Shetland Starling 

 has now been proved to be distinct and must be added as below. 

 These additions bring Part I. up to the date of January 1, 1919. 



Januarij, 19] 9. THE EDITOR. 



13a. Sturnus vulgaris zetlandicus Hart. — ^THE SHETLAND 

 STARLING. 



Sturnus vulgaris zetlandicus Hartert, Nov. Zool., xxv., p. 329 (1918 — Shetland 



Islands. Type, North Yell). 



Sturnus vulgaris Ogilvie- Grant, Bull. B.O.C, xxxra, p. 63 (1913). 



Description. — Adults — Like S. v. vulgaris but with longer vising and wider 

 bill, thus intermediate between S. v. vulgaris and S. v. faroensis. 



Juvenile. — Like that of S, v. faroensis, both upper- and under-parts being 

 black-brown and much darker than in S. v. vulgaris. Greyish-white of chin 

 and centre of throat and streaks on belly thus more contrasted with general 

 colour. 



Measurements. — ^ wing 130-138 mm., tail 61-69, tarsus 28-31, bill 

 from nostril 18-21, bill width at nostril 7.5-8.5 (12 measured), $ wing 128-132. 

 Wing formvila and rest of structure as in S. v. vulgaris. 



Distribution. — Shetland Islands, but not including Fair Isle, where there 

 appears to be a mixture of the two races. 



