(663) Cyornis magnirostris.
The Large-billed Blue Flycatcher.
Cyornis magnirostris Blyth, J. A. S. B., xviii, p. 814 (1849) (Darjiling) ; Blanf & Oates, ii, p. 26.
Vernacular names. Daogatang (Cachari).
Description.— Adult male. Differs from Cyornis rubeculoides in having the whole chin and throat chestnut. The blue of the upper parts is deeper but the chestnut below is paler and extends on to the lower breast and flanks.
Colours of soft parts. Iris hazel to dark brown; bill black ; legs and feet very pale fleshy-white to light horny-brown.
Measurements. Wing 76 to 83 mm.; tail 55 to 61 mm.; tarsus 18.5 to 19.0 mm.; culmen 15 mm.
Female. Like that of C. rubeculoides but paler below.
Colours of soft parts like the male.
Measurements as in the male.
Nestling. Above brown, each feather with a pale fulvous centre and dark margin ; tail rufous as in the adult female; below earthy-fulvous, the breast mottled with fulvous and brown. The males moult direct from the spotted plumage into the blue of the adult.
Distribution. Nepal, Sikkim, the whole of Assam, North and South of the Brahmaputra.
Nidification. Very similar to that of Cyornis rubeculoides -but the nest is generally placed in a hole in a bank or rock and is larger and more untidy than it is in that species. The eggs, three to five in number, are rather larger, decidedly darker and duller and more definitely spotted. Forty eggs average 19.1 x 14.6 mm.: maxima 20.4 x 14.6 and 20.1 x 15.2 mm.; minima 17.1 X 14.1 and 18.0 x l3.5 mm. The breeding-season is May, June and July and they breed from 3,000 to about 7,000 feet.
Habits. Those of the genus but this is essentially a bird of evergreen, humid forests.