(1173) Motacilla lugubris leucopsis.
The White-faced Wagtail.
Motacilla leucopsis Gould, P.Z.S., 1837, p. 78 (India); Blanf, & Oates, ii, p. 288.
Vernacular names. Dhobin (Hind.); Tangzhenfleu (Lepcha).
Description. Differs from Hodgson's Wagtail in having the ear-coverts, sides of the head and neck, chin and throat pure white.
Colours of soft parts as in Hodgson's Wagtail.
Measurements. Wing 87 to 93 mm.; tail 83 to 90 mm.; tarsus 22 to 24 mm.; culmen about 12 to 13 mm.
Distribution. Amur, Manchuria, Mongolia, Northern China to Tibet. In Winter South to South China, Formosa, Burma, Assam and Eastern Bengal and to Nepal.
Nidification. Over the greater part of its breeding area the White-faced Wagtail breeds in May and June. La Touche found it breeding in these months both near Foochow and near Fokhien between 1,000 and 4,000 feet and eggs have also been taken in Amur during these same months. On the other hand Hopwood obtained a nest in the Upper Chindwin in March and I have had eggs sent me with skins of this bird from Tibet taken from the Both May to the end of July. Nests and eggs only differ from those of the previous bird in being smaller and, like them, are placed, more often than not, in holes in buildings, whilst nests taken by La Touche were built in the roofs, either under the riles or in among the thatch. Twenty-five eggs average 20.7 x 15.4 mm.: maxima 21.6 x 16.0 and 21.0 x 16.1 mm.; minima 20.0 x 15.0 and 20.7 x 14.2 mm.
Habits. Normally this bird seems to be one of low elevations from the Plains to some 4,000 feet. In Tibet, however, the birds sent me were trapped at 12,000 to 14,000 feet, though it is possible that their occurrence and breeding in Tibet is only accidental. The Everest Expedition obtained it at 17,500 feet in September on its Southern migration.