BIRDS OF THE BRITISH ISLES. 



103 



3ctcrine Warbler. 



THE Icterine Warbler (Hypolais hypolais, Linnaeus) is a 

 rare accidental spring and autumn migrant to the British 

 Isles, breeding in Northern and Central Europe. On 

 migration, it passes through Southern Europe, spending 

 the winter in Africa. The adult in summer is, above, 

 olive -green ; eye-stripe and axillaries, greenish -yellow; 

 wings and tail, brown, with whitish margins ; under 

 parts, yellow, tinged with green ; irides, brown ; bill on 

 upper mandible, brown ; beneath, horn colour ; legs and 

 feet, greyish. Length, about five inches. The adult female 

 is similar to the male. 



