The Nightingale comes to Great Britain in the middle of April. In August the young birds take their departure, but the old birds stay until September in order to finish moulting before taking flight. It has been supposed that the migration is made singly, not in flocks like that of other small birds; but a naturalist has recorded having once seen great numbers of Nightingales resting [Illustration: USEFUL. THE NIGHTINGALE.] under the bathing machines along the _whole length_ of the shore at Brighton. This fine singer is very local in its appearance. In the West of England it is rarer than elsewhere, and beyond Devonshire it is said to be quite unknown. In the Midlands it is scarce, and in the Northern counties it is entirely absent excepting in Yorkshire, where it is getting more common. They seem to be capricious in their comings and goings from given localities; no doubt their presence depends on the season’s scarcity or abundance of the food they prefer. The nestlings live on spiders, ants and small green caterpillars in June, and they afterwards frequent fields planted with peas and beans. The adult birds feed on worms, insects and wild fruits, especially the berries of the elder. The Nightingale is as plain in plumage as it is marvellous in song. The mantle is russet-brown, shading off into reddish-chestnut near the tail, which is rust-colour, underparts whitish. It is scarcely as large as a Sparrow, and is much more delicately formed. Beak thin and pointed, legs slender. The shining, dark-brown eye has a brilliant glow. Its nest is placed among the bushes of a thicket, always near the ground. The outer covering is of dry leaves, then come blades of grass and fine rootlets, sometimes having hair interwoven with them. It does not stand out from the surrounding objects, and requires a sharp eye to discover it. The clutch consists of five or six olive-green eggs, with darker reddish-brown veining and speckles. [Illustration: USEFUL. THE REDSTART.] THE REDSTART. (_Ruticilla phoenicúrus._) This pretty and very useful bird quickly attracts notice in our gardens by its lively disposition. When it flies the tail spreads out, and then, when the bird settles again on any post or ledge the tail moves in a quick, tremulous way that is most amusing.