WILLOW WARBLER 



On leaving the egg the bird has its eyelids completely 

 sealed. 



GEOGRAPHICAL DISTRIBUTION. 



In England it is generally distributed and common, and to 

 Scotland it is on the whole an abundant summer visitor, but 

 in the Outer Hebrides it has only been found nesting in Barra, 

 and it is not recorded as nesting in the Orkneys although it 

 does so in the Shetland Islands. In Ireland it is common in 

 all suitable localities. 



Throughout the greater part of Western Europe it is 

 generally distributed. In Spain it is found locally as far south 

 as Gibraltar, but is not common. Portugal appears to be 

 visited only on migration. We find it a common breeding- 

 species in almost every part of France excepting the south- 

 eastern corner, where it is only found on migration, and it is 

 abundant in Belgium, Holland, Switzerland, Germany and 

 the Austro -Hungarian Empire. In Norway and Sweden it 

 is a summer visitor, numerous in places, breeding in the moun- 

 tains up to the limit of the trees, and inhabiting even the 

 extreme north of that continent. In Italy the bird is abundant 

 in summer in the northern and central provinces, but rather 

 rare on the Adriatic Coast and occasionally visits the moun- 

 tains of Sardinia, though absent from Corsica. Though fairly 

 common in Bulgaria it does not seem to be a breeding species 

 in Turkey and Greece. Throughout Finland it may be said 

 to be generally distributed and common, the country between 

 St. Petersburg and Archangel is also inhabited, and we find it 

 breeding in the provinces of Vologda, Western Archangel, 

 Viatka, Perm, and the valley of the Petchora. Eastwards 

 from here we trace it to the valleys of the rivers Ob, Yenisei, 

 Lena, and Kolima. Though common in Poland, in the 

 vicinity of St. Petersburg, in the provinces of Novgorod, Tver, 

 Jaroslav, and Moscow, in the district between the rivers Volga 

 and Oka, and in the province of Kasan and neighbouring 

 provinces, yet there seems to be some doubt as to whether it 



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