354. Lanius speculiger

354. SUBSP. LANIUS SPECULIGER.
Lanius speculigerus, Tacz. J.f.O. 1874, p. 322 ; id. F, O. Sib. O. p. 504 ; Gadow, Cat. B. Br. Mus. viii. p. 279 ; Otomela isabellina var. orientalis. Bogd. Sorokop. Russk. Faun. p. 38 (1881).
Differs from L. isabellinus, of which it is but an eastern race in having a large white alar speculum, and in having the whole of the lores deep black ; the quills also are of a darker brown. Culmen 0.7, wing 3.72, tail 3.35, tarsus 0.95 inch.
Hab. Southern Dauria, the Gobi desert, and probably eastern Mongolia.
Differs so little from L. isabellinus that I am very doubtful if it should be treated as distinct. I have seen a specimen from Turkestan, that agrees pretty closely with others from Dauria and also a similar example from Central Africa.

BookTitle: 
A Manual Of Palaearctic Birds
Reference: 
Dresser, Henry Eeles. A Manual of Palaearctic Birds. Vol. 1. 1902.
Title in Book: 
354. Lanius speculiger
Book Author: 
H. E. Dresser
CatNo: 
354
Year: 
1902
Page No: 
239
Volume: 
Vol. 1
id: 
10917

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