Page:The British Warblers A History with Problems of Their Lives - 8 of 9.djvu/51

 been recorded from Fair Isle and Sule Skerry on migration. In Ireland it is rare and local, nesting only in Galway, Queen's Co. and Wicklow.

In Spain it seems to be a rare breeding species, only recorded as nesting in the extreme south, though, as usual, the information from that part of Europe is meagre. From France, Belgium, Germany, the Austro-Hungarian Monarchy, and Switzerland, there is ample evidence of its general distribution, but in Italy it is not a very common breeding species, more numerous, however, in the central and northern parts, and rare in Sardinia and Corsica. Heligoland is visited on migration, though the bird does not appear to pass or rather to rest upon this island so frequently as one might expect. It occurs in Denmark and the lower part of Sweden, but not apparently in Norway. Greece is passed on migration, but its status in Turkey and Bulgaria has not been satisfactorily determined. Throughout Poland, the Baltic Provinces, and Central Russia generally as far as the River Volga it is generally distributed, but to the south it seems to be a bird of passage only, though the data from the provinces round the Black Sea and from the Caucasus are not very satisfactory. Returning to the north we find it not uncommon in Finland as far as Kuopio, which is perhaps its northernmost limit, a summer visitor to the province of Vologda, rare, however, in the vicinity of Archangel, and occurring, though rarely, on the south-western slopes of the Ural Mountains. There are records of its breeding near the town of Orenburg. It is apparently present in N. Algeria in the breeding season, but has not yet been proved to breed there.

On migration it is found in Asia Minor, Cyprus, Palestine, Arabia, and Egypt, and also in Madeira on the west side. The bird winters in Africa, its migrations extending to the Gold Coast, the Congo, and Abyssinia.