The male Japanese quail is easily distinguished from the male common or grey quail, to which it is very closely allied, by having a brick-red throat with no dark marking or only a central streak. In the hens the difference is chiefly to be found in the structure, not the colour, of the feathers of this part, the Japanese bird having the throat-feathers noticeably long and pointed at the tips; at the sides of the throat these elongated feathers are edged with reddish. In both sexes the reddish tint on the flanks is brighter than that found in the same place on the common quail.
Hens of this species have been shot in Bhutan, Karennee, and Manipur, and as this is the ordinary quail of the mainland of far eastern Asia, as well as Japan, it is quite probably a common winter visitor to the eastern parts of our Empire. The only noteworthy difference in the ways of this bird and the common quail appears to consist in the note of the male, which is said to be deep and hollow, of several rapidly-uttered syllables.