177(a). Grammatoptila striata sikkimensis

(177 a) Grammatoptila striata sikkimensis Ticehurst.
THE SIKKIM STRIATED LAUGHING-THRUSH.
Grammatoptila striata striata, Fauna B. I., Birds, 2nd ed. vol. i, p. 184 (part.).
Grammatoptila striata sikkimensis, ibid. vol. viii, p. 600.
The range of this race is from Eastern Nepal to Bhutan, but how far East to the hills of Northern Assam is not yet known. Neither Coltart, Stevens nor I ever had it brought us from the Dafla, Miri or Abor Hills.
Gammie and Mandelli found this Striated Laughing-Thrush breeding in Sikkim between 5,000 and 6,000 feet but Stevens records it between 3,500 and 7,500 feet for the outer ranges and at 2,500 in some of the interior valleys.
Its nidification is similar to that of the Simla bird but there Is generally more moss used in the construction of the nest. Some nests shown me by Stevens look as if made externally entirely of moss until they are carefully looked into and dissected. Gammie and Mandelli took all their nests from small trees and saplings at heights of from 8 to 20 feet up. So far they have not yet been recorded as breeding in bushes but Stevens found several nests built in the tops of tree-ferns, where they were subject to consider¬able swaying movements when there was any wind.
The breeding season lasts from May to the end of July, most eggs being laid in the first-named month. The eggs only differ from those of the last bird in being more pointed, a feature already alluded to by Hume. Stevens suggests that this character may be connected with the excessive rolling they get in their elevated, wind-blown nesting-sites.
One egg in a clutch of two, taken by Stevens, has about a dozen bold blotches of light brown at the larger end, the other egg having only a few tiny spots of the same. Some of Gammie’s eggs have also got traces of marks on them, though none so definite as in Stevens’s specimen.
Sixteen eggs average 33.1 x 22.7 mm. : maxima 35.0 x 22.5 and 34.4 x 24.1 mm. ; minima 31.5 x 21.3 mm.

BookTitle: 
The Nidification Of Birds Of The Indian Empire
Reference: 
Baker, Edward Charles Stuart. The nidification of birds of the Indian Empire. Vol. 1. 1932.
Title in Book: 
177(a). Grammatoptila striata sikkimensis
Spp Author: 
Madarasz.
Book Author: 
Edward Charles Stuart Baker
CatNo: 
177
Year: 
1932
Page No: 
146
Common name: 
Sikkim Striated Laughing-thrush
M_ID: 
24920
M_SN: 
Garrulax striatus sikkimensis
Volume: 
Vol. 1
Term name: 
id: 
13382

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