The black-throated jay is a handsome bird, more striking in appearance even than the jay of England (_G. glandarius_). Its crested head is black. Its back is a beautiful French grey, its wings are black and white with a bar of the peculiar shade of blue which is characteristic of the jay family and so rarely seen in nature or art. Across this blue bar run thin black transverse lines. The tail is of the same blue with similar black cross-bars, and each feather is tipped with white. The throat is black, with short white lines on it. The legs are pinkish slaty, and the bill is slate coloured in some individuals, and almost white in others. The size of this jay is the same as that of our familiar English one. Black-throated jays go about in flocks. This is a characteristic of a great many Himalayan birds. Probably the majority of the common birds of these mountains lead a sociable existence, like that of the "seven sisters" of the plains. A man may walk for half-an-hour through a Himalayan wood without seeing a bird or hearing any bird-sound save the distant scream of a kite or the raucous voice of the black crow; then suddenly he comes upon quite a congregation of birds, a flock of a hundred or more noisy laughing-thrushes, or numbers of cheeping white-eyes and tits, or it may be a flock of rowdy black bulbuls. All the birds of the wood seem to be collected in one place. This flocking of the birds in the hills must, I think, be accounted for by the fact that birds are by nature sociable creatures, and that food is particularly abundant. In a dense wood every tree offers either insect or vegetable food, so that a large number of birds can live in company without fear of starving each other out. In the plains food is less abundant, hence most birds that dwell there are able to gratify their fondness for each other's society only at roosting time; during the day they are obliged to separate, in order to find the wherewithal to feed upon. Like all sociable birds, the black-throated jay is very noisy. Birds have a language of a kind, a language composed entirely of interjections, a language in which only the simplest emotions--fear, joy, hunger, and maternal care--can be expressed. Now, when a considerable flock of birds is wandering through a dense forest, it is obvious that the individuals which compose it would be very liable to lose touch with one another had they no means of informing one another of their whereabouts. The result is that such a means has been developed. Every bird, whose habit it is to go about in company, has the habit of continually uttering some kind of call or cry. It probably does this unconsciously, without being aware that it is making any sound.