(1951) Coturnix coturnix japonica.
THE JAPANESE GREY QUAIL.
Coturnix japonica Temm. & Schleg.. Faun. Jap., p. 103 (1842) (Japan). Coturnix communis. Blanf. & Oates, iv, p. 114 (part.).
Vernacular names. Gnon (Burm.).
Description.— Adult male. Differs from the typical forms in having no blackish on the chin and throat and no cross-bars, these parts and the sides of the head being light brick-red; the plumage is frequently richer and darker and the feathers of the sides of the chin are often rather lengthened and bristly.
Colours of soft parts as in the Common Quail.
Measurements. Wing 91 to 104 mm.
Female differs from the Western form in having the feathers of the chin and sides of the lower cheeks stiff, long and pointed, forming a little bristly beard.
Distribution. Breeding from Eastern Siberia to Japan. In Winter migrating to Southern China, the Indo-Chinese countries, Burma and to Assam South of the Brahmapootra.
Nidification. The Japanese Quail breed in great numbers in Japan from the end of May to July, laying eight to twelve eggs in a hollow, natural or made by the birds, lined with leaves and grass and placed either in grass-land or in standing crops, less often on hill-sides under shelter of a boulder. The eggs are not distinguishable from those of the Common Quail and vary in similar degree. Eighty eggs average 28.7 x 22.4 mm.: maxima 32.6 x 22.4 and 32.0 x 24.5 mm.; minima 26.2 x 22.1 and 27.2 X 20.5 mm.
Habits. Much the same as those of the preceding bird but there appear to be no permanently resident birds anywhere within our area, all being regular North and South migrants in the Autumn and Spring.