38. Glenargus leucopterus

(38) Glenargus Ieucopterus Temm.
Platysmurus Ieucopterus, Fauna B. I., Birds, 2nd ed. vol. i, p. 58.
Glenargus Ieucopterus, ibid. vol. vii, p. 8 ; ibid. viii, p. 596.
This curious Jay breeds from Tenasserim and peninsular Siam through the Malay States to Sumatra. Davison first obtained a nest “on the 8th of April at the Hot Springs at Ulu Langal. The nest was built on the frond of a Calamus the end of which rested in the fork of a small sapling. The nest was a great coarse structure like a Crow’s, but even more coarsely and irregularly built, and with the egg-cavity shallower. It was composed externally of small branches and twigs, and loosely lined with coarse fibre and strips of bark. It contained two young birds about a couple of days old. The nest was placed about six feet from the ground. The surrounding jungle was moderately thick, with a good deal of undergrowth.” Many years after this W. Partridge sent me two pairs of eggs, said to be of this Jay, taken from bulky nest of sticks and twigs, lined with roots and shredded bark. Both nests were built at about 8 feet from the ground, in high bushes, growing in secondary jungle. These two nests were taken on the 16th March and 19th May. No parent bird having been shot these eggs were placed on one side as doubtful, but between 1918 and 1920 Messrs. Hopwood and Mackenzie took several nests with eggs exactly like those taken by Partridge, when all doubts were set at rest.
All the nests are described as clumsy, bulky affairs made of twigs and branches lined with roots and tendrils etc., but one nest taken by Hopwood had the cup very neatly lined and rounded off with a few flowers of a Vaccinium, One nest also had bamboo and other leaves woven into the sticks and twigs of the outer part. Three nests were taken from Cane-brakes at heights of 4, 6, and 10 feet from, the ground, whilst the fourth was built on a bamboo-branch about 6 feet up. The Cane-brakes were all in very dense, matted forest and jungle, the bamboo-clump in “open bamboo forest.”
The breeding season seems to be from early March to the end of May, fresh and incubated eggs having been taken in each of these three months.
The eggs differ in size from those of the Cissas, or Green Magpies, already described and in being more dull in colour and practically without gloss. The ground-colour is a very pale yellowish stone stippled and minutely blotched all over with light yellowish-brown, numerous everywhere but even more so at the larger end. There are also tiny secondary blotches of light grey, though these must be looked for with, a magnifying-glass. One set of eggs has a faint tinge of olive in the ground, whilst in one, a single egg, there is a distinct blue-green tint.
Fifteen eggs average 35.1 x 24.0 mm : maxima 35.0 x 23.0 and 33.1 x 24.7 mm. ; minima 32.1 x 24.6 and 33.0 x 23.0 mm.
In shape the eggs are rather long true ovals ; the texture is stout and close and the surface generally very slightly glossed.

The Nidification Of Birds Of The Indian Empire
Baker, Edward Charles Stuart. The nidification of birds of the Indian Empire. Vol. 1. 1932.
Title in Book: 
38. Glenargus leucopterus
Spp Author: 
Book Author: 
Edward Charles Stuart Baker
Page No: 
Common name: 
White-winged Jay
White-winged Tern
Chlidonias leucopterus
Vol. 1

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