At intervals the to-wee to-wee of the tailor-bird (Orthotomus sutorius) had rung out clear and distinct from the medley of sounds that filled the grove. Suddenly two tailor-birds came on the scene, one chasing the other. They alighted on a horizontal bough, where they tarried sufficiently long to enable me to see the chestnut crown so characteristic of the species.
I have omitted to make mention of the sprightly magpie-robin (Copsychus saularis). Of this species there was at least one pair in that little grove, and several times did the cock descend to the ground, and hop about, with tail erect. He is arrayed in black and white, and a smarter-looking bird does not exist. His mate also put in an appearance; she has all his sprightliness and is equally tastefully attired in grey and white.
Having spent an hour in the grove, I had to return to my tent to work, without having witnessed all the dramatis personæ of the daily pageant. As I was leaving the tope a hen brown-backed robin (Thamnobia cambaiensis) hopped out of an arhar field and stood beneath a mango tree, carrying her tail erect so as to display the red undertail coverts.
After I had reached my tent, fifty yards away, I heard the kutur—kutur—kuturuk of the green barbet (Thereiceryx zeylonicus), the loud tap, tap, tap of the golden-backed woodpecker (Brachypternus aurantius), and the cheerful notes of the king crow (Dicrurus ater).
II
THE MAGPIE-ROBIN
The magpie-robin (Copsychus saularis), or dhayal, as the Indians call him, is a truly delightful bird. He is of handsome appearance, bold disposition, and confiding habits. He is, further, a singer who can hold his own in any company when at his best. The dhayal is a typically Indian bird, being found in all parts of the country from the Himalayas to Cape Comorin. He is common in Ceylon and ascends the hills of India to altitudes of over 6000 feet. He is, I believe, more abundant in the United Provinces than anywhere else. It is no exaggeration to assert that at least one pair of magpie-robins lives in every garden in Oudh and Agra. I do not count as gardens those treeless compounds in which some bungalows are situate, for the magpie-robin is a bird that loves shade. The species, although by no means rare in South India, is not nearly so abundant there as in the northern part of the peninsula.
The dhayal is very easily identified. The cock is a black and white bird rather larger than the familiar English robin. His head, neck, breast, and upper parts are black with a white bar in the wing. The lower parts are white, as are the outer tail feathers.
The above description will show that the black and white markings of the plumage are similar to those of the common magpie; hence the popular name of the bird—magpie-robin. If the distribution of the magpie-robin happened to coincide with that of the magpie, I have no doubt whatever that zoologists of the school of Wallace would cite the dhayal as an example of protective mimicry. They would tell us that this robin had aped the dress of the powerful magpie in order to dupe the crows and other bullying birds that vex the lives of their smaller neighbours.
As the magpie-robin dwells mostly where the magpie is not found, no Wallaceian has attempted to explain why its colouring is so like that of the magpie. As a matter of fact, the magpie scheme of colouring seems to be a popular one in nature (if I may be permitted to use such an expression). It appears in seven species which are in no way closely related one to another, to wit, a goose, a crow, a tanager, a honey-eater, a swallow-shrike, a robin, and, of course, the common magpie.
The hen magpie-robin is brownish grey where her lord and master is black, the pattern of her plumage being the same as his.