977. Tetrao mlokosiewiczi

977. Georgian Black Grouse.
Tetrao mlokosiewiczi Tacz. P.Z.S. 1875, p. 266 ; Dresser, vii. p. 219, pl. 488 ; (Olgilvie Grant), Cat. B. Br. Mus. xxii. p. 58 ; T. acatoptricus, Radde, Orn. Cauc. p. 358, pl. xxiii.
Tetereff tschernysch, Russ. ; Jaban-tank, Persian ; Paitmorek, Armen. ; Kara-touch, Tartar.
Male ad. (Georgia). Differs from T. tetrix in lacking the white on the upper surface of the wing, in having the under tail-coverts black, and the tail with the tip bent downwards and slightly outwards ; the glossy parts of the plumage with bottle-green reflections. Culmen 1.05, wing 7.9, tail 9.0, tarsus 2.25 inch. The female is greyish closely vermiculated with blackish brown ami rusty brown, the upper parts more rufescent than the under parts ; throat white ; secondaries and under tail-coverts tipped with white ; tail long, nearly square, blackish brown closely variegated with rufous and sandy yellow ; middle of abdomen marked with black.
Hab. The whole of the Caucasus Mountains.
Is a mountain bird, inhabiting high altitudes on the borders of tree growth and the rhododendron zone at from 6,000 to 8,000 and even 11,000 feet altitude, and never descends into the valleys. In habits it resembles T. tetrix, and like that bird is polygamous, and in the pairing season frequents certain spots where the males “drum” and fight for the possession of the females. The nest is a hollow scratched in the soil, usually under shelter of a rock, and the eggs, 8 to 10 in number, are usually deposited in May or early in June, and resemble those of T. tetrix both in ground-colour and markings, but are con¬siderably paler. In size they vary from 1.78 by 1.26 to 2.7 by 1.37.

A Manual Of Palaearctic Birds
Dresser, Henry Eeles. A Manual of Palaearctic Birds. Vol. 2. 1903.
Title in Book: 
977. Tetrao mlokosiewiczi
Book Author: 
H. E. Dresser
Page No: 
Common name: 
Georgian Black Grouse
Caucasian Grouse
Lyrurus mlokosiewiczi
Vol. 2

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