1149. Larus schistisagus

1149. SLATY-BACKED GULL.
LARUS SCHISTISAGUS.
Larus schistisagus, Stejneger, Auk, 1884, p. 231 ; Tacz. F. O. Sib. O. p. 1024 ; Saunders, Cat. B. Br. Mus. xxv. p. 258 ; Ridgway, p. 29 ; L. marinus (nec. Linn.), Swinhoe, Ibis, 1874, p. 165 ; Seebohm, B. Jap. Emp. p. 291.
O-seguro-kamome, Jap.
Male ad. (Kuriles). Head, neck, tail, and under parts white ; wings and mantle dark slate ; scapulars and secondaries tipped with white ; quills black, the inner webs of the outer ones grey ; third quill with a distinct white spot between the grey and the black on the inner web ; bill rich yellow with a red subterminal spot on the lower mandible ; legs and feet dull purplish flesh-colour. Culmen 2.28, wing 18.0, tail 7.6, tarsus 2.7 inch.
Hab. Coasts of Eastern Siberia, the Bering and Okhotsk Seas ; the Kurile Islands, and Northern Japan in winter.
In habits it does not differ from its allies. It breeds in the Kurile Islands, but its eggs appear to be undescribed.

BookTitle: 
A Manual Of Palaearctic Birds
Reference: 
Dresser, Henry Eeles. A Manual of Palaearctic Birds. Vol. 2. 1903.
Title in Book: 
1149. Larus schistisagus
Book Author: 
H. E. Dresser
CatNo: 
1149
Year: 
1903
Page No: 
836
Common name: 
Slaty Backed Gull
M_ID: 
4567
M_CN: 
Slaty-backed Gull
M_SN: 
Larus schistisagus
Volume: 
Vol. 2
id: 
10818

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