902. Abroscopus albogularis albogularis

(902) Abroscopus albogularis albogularis (Moore).
Abrornis albogularis albogularis, Fauna B. I., Birds, 2nd ed. vol. ii, p. 498.
Abroscopus albogularis albogularis, ibid. vol. viii, p. 644.
This Warbler has almost exactly the same range as the Yellow-bellied Flycatcher-Warbler, extending from Nepal on the West to Assam on the East, where it is found both North and South of the Brahmapootra. It also occurs in Manipur, Looshai and Chin Hills.
Mandelli’s supposed nest of this bird, recorded in Hume’s ‘Nests and Eggs,’ was certainly not the nest of any bird of the genera Seicercus or Abroscopus.
The only authentic nests I know of are those taken by myself in the Cachar and Khasia Hills and those taken by Dr. H. N. Coltart in the low hills above Margherita.
In Sikkim Stevens records this Warbler as a bird of low elevations, “probably 2,500' and under,” but in the hills of the Surrma Valley it occurred at all elevations between 1,000 and 4,000 feet, being most common between 2,000 and 4,000 feet. It, however, breeds up to 6,000 feet, as I took one nest at this elevation near Hungrum.
Like most of its near relations, it keeps much to bamboo-jungle, mixed scrub- and bamboo-jungle or the secondary scrub in deserted cultivation. Wherever it is found in the breeding season one may be sure water is near by, and quite certain that there are bamboos of some kind for nesting purposes.
All the nests seen by me, perhaps a dozen all told, were built in bamboos, as were the three taken by Coltart. Generally the bamboo selected is a small one, but I found one pair nesting in a broken piece of bamboo belonging to a giant clump, the bases of the bamboos being as much as 10 inches across. This pair had built about 4 feet from the ground in one of these huge bamboos which, in a gale, had broken and fallen over and, while still attached to the base, left an aperture by which the birds could enter. This great hollow was filled for about a foot deep with scraps of grass,and on this was placed the usual felted pad of moss, with a distinct cup in the centre for the three hard-set eggs it contained. The clump of bamboos was one of two or three just beside a comparatively wide bridle-path running through bush-jungle. The birds often, one might say almost invariably, select bamboos which have been cut down by human agency, and then left standing against, or in, the clump from which they were cut. One nest just below my garden was placed in a bamboo which had been cut from a clump growing in front of my house and thrown away, lodging in a crevice and sticking upright against a bank.
Most nests consist first of a layer of odds and ends and then the true nest, consisting of a felted pad of moss, fitting in diameter the bamboo in which it is placed, and measuring an inch to two inches in thickness. The sub-structure varies considerably ; I have seen one nest with 8 inches of bamboo-fibre, roots and bamboo-leaves ; another consisted of about 3 inches of strips of grass ; another of only the aerial roots of bamboos ; while in one the usual sub-layers of other materials had been dispensed with and the birds had used nothing but small scraps of green moss. About 6 inches of this was loosely put together and just the top inch felted and shaped to receive the eggs.
The earliest date for a nest with eggs was one taken by Coltart at Margherita on the 2nd April, and the latest, by myself, on the 19th June at Shillong. Late April and early May constitute the main breeding season and, normally, I do not think they are double¬brooded.
The eggs number three to five and are in all respects like those of A. s. superciliaris, but the most common type is that which looks an almost uniform terra-cotta red.
Thirty-three eggs average 14.4 x 11.5 mm. ; maxima 15.6 x 12.0 mm. ; minima 13.3 x 10.9 and 13.7 x 10.8 mm.
Both sexes incubate and both assist in making the nest.

The Nidification Of Birds Of The Indian Empire
Baker, Edward Charles Stuart. The nidification of birds of the Indian Empire. Vol. 2. 1933.
Title in Book: 
902. Abroscopus albogularis albogularis
Spp Author: 
Book Author: 
Edward Charles Stuart Baker
Page No: 
Common name: 
Nepal White-throated Flycatcher-warbler
Abroscopus albogularis albogularis
Vol. 2

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