The breeding habitats are
marshes,
bogs,
tundra and
wet meadows throughout the
Palearctic. In the north, the distribution limit extends from Iceland over the north of the British Isles and northern
Fennoscandia, where it occurs at around 70°N, as well as through European Russia and Siberia. Here it is mostly on the northern edge of the Taiga zone at 71°N, but reaches 74°N on the east coast of the
Taymyr Peninsula. In the east it extends to Anadyr, Kamchatka,
Bering Island and the
Kuril Islands, The southern boundary of the distribution area in Europe runs through
northern Portugal, central
France,
northern Italy,
Bulgaria, and
Ukraine, with populations in the west being only very scattered. In Asia, the distribution extends south to northern
Turkestan, locally to
Afghanistan and the Middle East, through the
Altai and further to
Manchuria and
Ussuri. It is
migratory, with European birds wintering in southern and western Europe and
Africa (south to the Equator), and Asian migrants moving to tropical
southern Asia. ==Taxonomy==