. Birds of Britain . arbler. Length65 in.; wing 3 4 in. THE SUB-ALPINE WARBLER Sylvia subalpina, Bonelll Breeding numerously in Spain and South-East France,this species has only once occurred here, namely on in June 1894. The upper parts are dull grey and under parts is a red ring round the eye and a conspicuous whitemoustache-like streak extending backwards from the female is much duller and the under parts are pale 4*7 in.; wing 2*3 in. THE DARTFORD WARBLER Sylvia undata (Boddsrt) This bird, which is extremely rare and local with us, isthe only re
. Birds of Britain . arbler. Length65 in.; wing 3 4 in. THE SUB-ALPINE WARBLER Sylvia subalpina, Bonelll Breeding numerously in Spain and South-East France,this species has only once occurred here, namely on in June 1894. The upper parts are dull grey and under parts is a red ring round the eye and a conspicuous whitemoustache-like streak extending backwards from the female is much duller and the under parts are pale 4*7 in.; wing 2*3 in. THE DARTFORD WARBLER Sylvia undata (Boddsrt) This bird, which is extremely rare and local with us, isthe only resident member of its genus in these as it does our changeable and stormy climate, it isperhaps not surprising that its numbers are few, for, feedingalmost entirely on insects, it must at times suffer severelyfrom lack of food. Local, perhaps, is hardly a strong enoughword to express the very stay-at-home habits of this cheery 48 DARTFORD WARBLER Sylvia tcndata Male (above). Young (below) • ••, *. The Dartford Warbler little fellow; he seems to have gone to the opposite extreme,and, while his congeners cross large stretches of the earthtwice a year, he remains at home practically on the samebush. In habits he is very skulking, hiding in thick furzebushes. He will, when disturbed, take a short flight andthen dive down into the thickest part of another Shelter, andall we can notice in the short glimpse we get of him, is thathe is extremely dark. The common on which he lives, maybe many miles in extent, and apparently uniformly coveredwith furze and rank grass, and yet he will only be foundin a special batch of furze perhaps not a hundred yards inlength ; there, summer and winter, we may always find a smallcolony, while on the rest of the common we shall hardlyever see a single individual. In spring he becomes bolder,and we may watch him as he sits on the topmost spray of abush, flirting his tail and throwing his body and wings intomany and varied positions wh
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