(769) Dicrurus macrocercus cathaecus.
The Chinese Black Drongo.
Dicrurus cathaecus Swinh., P. Z. S., 1871, p. 377 (China).
Vernacular names. Lin-mi-sue (Burmese).
Description. This form is very close to D. m. macrocercus but is a rather larger bird with a comparatively shorter tail. The rictal white spot is often wanting. Wing 135 to 155 mm.,, average 148.4 mm.; tail 125 to 165 mm., average 148 mm.; tarsus about 21 mm ; culmen about 22 mm.
Distribution. Burma South of the area mentioned for the last species, South China, Siam and the Indo-Chinese countries and Hainan. In Burma it is found at least as far South as Amherst and Mergui, whence we have birds with wings measuring 143 and 144 mm. respectively ; but about here it must grade into the next race and Kloss is probably right in assigning to the latter specimens from the extreme South-west of Peninsular Siam.
Nidification that of the species. Mr. Hop wood has found it breeding in Maymyio, South Chin Hills and in Tenasserim. Messrs. La Touche, Styan and Ricketts all found it breeding in great numbers in China. A small series of eggs, winch I owe to these gentlemen, measures as follows:—Average 20 eggs 25.3x 18.6 mm.: maxima 27.0 X 19.0 and 26.8 x 19.1 mm.; minima 23.1 X 18.2 and 23.7x 18.0 mm.
Habits. Those of the species.