(773) Dicrurus leucophaeus hopwoodi.
The Assam GREY Drongo.
Dicrurus leucophaeus hopwoodi Stuart Baker, Nov. Zool., xxv, p 294 (1918) (Dacca). Dicrurus cineraceus. Blanf. & Oates, i, p. 318
Vernacular names. Lon-mi-sue (Burmese).
Description. This is the darkest of all the Eastern forms of Dicrurus leucophaeus and also the biggest.
Measurements. Wing 130 to 153 mm., average 146 mm.; tail 130 to 167 mm., average 149 mm.; culmen 23 mm.
Distribution. Assam and Bengal, South and East of the Brahmaputra, Manipur, Lushai, Chittagong Hill-Tracts and the Northern parts of the Chin and Kachin Hills, Shan States and Yunnan.
Nidification. This Grey Drongo breeds in great numbers in Assam between 4,000 and 5,000 feet and less freely up to 0,000 or 7,000 feet and right down to the plains. They breed in April and May, many birds having second broods in June and July. The nest is just like that of the Common Indian Grey Drongo but is more often placed in trees actually in or on the outskirts of forest. One hundred and fifty eggs average 24.6 x 18.5 mm.: maxima 27.5 x 19.3 and 25.3 x 20.0 mm.; minima 21.9 x 17.3 mm.
Habits. Those of the species. It is resident and breeds at all ranges from the foot-hills to about 4,000 feet, but above that elevation most birds come merely for the breeding-season and leave again for lower elevations after August. In the plains a certain number are resident but the majority leave these and visit the hills for breeding-purposes.