Formerly this species used to breed regularly in many places in England, where large stretches of marsh-land suitable to its habits were to be found. A pair or two may occasionally still try to rear a brood in East Anglia, but owing to the drainage of the fens, it is no longer known in any of its former haunts. In Ireland, where it was formerly fairly common, its breeding area is restricted to one locality. To Scotland it has always been an extremely rare visitor. On migration small numbers of this species visit England and Wales yearly. The nest is a fairly substantial structure, built of reeds and grass, and placed on the ground. The eggs, which generally number five, are pale bluish white without any other markings.

In plumage this species varies greatly according to age; the adult male is dark brown on the back, head creamy white with dark streaks, wing coverts and tail silvery grey; primaries blackish. Under parts buff streaked with brown. In the female the tail and under parts are brown. Young birds are chocolate brown; the entire crown of the head is buffish white in the males, but in the females the nape only is yellowish. Length (of males) 21 in.; wing 16 in.