1336. Calyptomena viridis continentis

(1336) Calyptomena viridis continentis Rob. & Kloss.
Calyptomena viridis, Fauna B. I., Birds, 2nd ed. vol. iii, p. 475.
Calyptomena viridis continentis Bob. & Kloss, Jour. Fed, Malay States Mus. vol. xi, p. 54, 1920 (Isthmus of Kra).
Robinson (‘Birds of the Malay Peninsula,’ vol. i, p. 161, 1927) gives the range of this form as “South to Selangor and Penang Island ; North to Amherst in Tenasserim
Darling, and later Hopwood and Mackenzie, found this bird frequenting dense evergreen-forest, hut Robinson and Siemund found one nest in Bandon, and the former says that the bird is “common in secondary and old jungle up to about 3,000 feet.” Hume’s description of Darling’s nest covers well those taken by Robinson, Hopwood and Mackenzie. He writes:—“They are invariably suspended from small twigs, generally across them and not from the extreme tip, and are egg-shaped except at the top, where they are pinched out flat along the twig, and from them depends a long tail, in some specimens fully three feet in length. The body of the nest is only about 9 inches in length and 4 in diameter ; the entrance is large and oval, towards the upper part of the nest, from 3 to 3.1/2 inches in height, and 2 to 2.1/2 in width. The cavity is perfectly egg-shaped, and is from 5.1/2 to 6.1/2 inches in height and 3 to 3.1/2 in diameter. Exteriorly the nest, which is very closely put together and much more compressed and compact than that of Psarisomus dalhousioe, is sometimes composed entirely of fine grass, and it is in these nests in which the tail, also composed of the same fine grass, is most developed. In others less of this grass is used and a good deal of moss is incorporated in the outer structure. In others again quantities of fine hair-like black roots and moss form the chief constituents of the exterior of the nests, though in these, too, a good deal of fine grass and other vegetable fibre is intermixed, and in these nests the tail is less developed, being here only 8 or 10 inches in length. Inside this exterior coating the nest is composed of broad flags, bamboo-spathes and the like, and inside this, at the bottom of the cavity, is a lining of soft grass.”
* The division of this species into races is very doubtfully correct ; over¬lapping is very great and, when writing the ‘Fauna,’ I found myself quite unable to discriminate between them.
Hopwood found one nest with no tail at all and another lined with green leaves over the grass.”
The breeding season in Tenasserim is March and April.
Two or three eggs are laid which are a uniform spotless cream or creamy-yellow. In shape they are, as Hume says, graceful elongated ovals, rather pointed towards the smaller end.
Eleven eggs, including Hume’s, average 29.7 x 20.7 mm, : maxima 30.6 x 21.3 and 30.2 x 22.0 mm. ; minima 28.4 x 19.7 mm. (Hume’s eggs).

The Nidification Of Birds Of The Indian Empire
Baker, Edward Charles Stuart. The nidification of birds of the Indian Empire. Vol. 3. 1934.
Title in Book: 
1336. Calyptomena viridis continentis
Spp Author: 
Book Author: 
Edward Charles Stuart Baker
Page No: 
Common name: 
Malay Green Broadbill
Green Broadbill
Calyptomena viridis
Vol. 3

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