A HAND -LIST OF BRITISH BIRDS. 59 



PHYLLOSCOPUS SIBILATRIX 



125. Phylloscopus sibilatrix sibilatrix (Bechst.) - THE 

 WOOD-WARBLER. 



MOTACILLA SIBILATRIX Bechstein, Naturforscher., xxvii, p. 47 (1793 



Thiiringian mountains). 



Phylloscopus sibilatrix (Bechstein), Yarrell, i, p. 427 ; Saunders, p. 71. 



DISTRIBUTION. England and Wales. Summer-resident (mid-April 

 to Sept.). Widely distributed in well-wooded districts, but local, 

 being abundant in some parts (especially those heavily-woooded 

 with beech and oak) and rare or unknown in treeless districts. 

 Has been observed Isle of Man. Scotland. Fairly common, but 

 local in south, becoming more thinly distributed northwards to 

 Loch Broom (Ross), north of which on west side unknown as nester. 

 On east side fairly common in south-east Sutherland (as far west as 

 Lairg), but very rare further north. Single birds Fair Isle (June and 

 Aug., 1907, and May, 1909), and one Sule Skerry (Sept., 1906), 

 but otherwise unknown Orkneys and Shetlands. A summer- 

 resident in most I. Hebrides and said to have occurred once in 

 O. Hebrides. Ireland. Extremely scarce, nesting small numbers 

 Galway and Queen's co., and Wicklow. Vagrants have been taken 

 in Donegal, Fermanagh, Mayo and Dublin, and seen in Sligo, 

 Londonderry, Antrim and Wexford. 



DISTRIBUTION. Abroad. Europe from Upsala, south Finland 

 and Archangel to France, Alps, and Austria-Hungary. Replaced 

 by an ill-defined subspecies, apparently with different song, in the 

 Mediterranean countries, probably also in north-west Africa. 



PHYLLOSCOPUS BOREALIS 



126. Phylloscopus borealis borealis (Bias.) EVERSM ANN'S 

 WARBLER. 



PHYLLOPNEUSTE BOREALIS Blasius, Naumannia, 1858, p. 313 (Sea of 



Ochotsk.). 



Phylloscopus borealis (Blasius), Clarke, Ann. Scot. Nat. Hist., 1909, p. 1. 



DISTRIBUTION. Scotland. The first, Sule Skerry Light (Orkneys), 

 Sept. 5, 1902, was erroneously recorded as P. n. viridanus (cf. 

 Saunders, Bull. B.O.C., xm, p. 12, W. E. Clarke, Ann. Scot. Nat. 

 Hist., 1903, p. 22), and subsequently correctly identified (id., op.c., 

 1909, p. 114, and cf. Brit. B., n, p. 408). Second, Fair Isle (Shet- 

 lands), Sept. 28, 1908 (W. E. Clarke, Ann. S.N.H., 1909, p. 1, and 

 cf. Brit. B. } n, p. 310). 



DISTRIBUTION. Abroad. North Norway and north Russia to east 

 Siberia, in winter in southern parts of Asia and its islands as far 



