BIRDS OF THE BRITISH ISLES. 



THE Wall-Creeper (Tuhodroma muraria, Linnaeus), which 

 is an exceedingly rare and irregular spring and autumn 

 migrant to the British Isles, is a resident in the moun- 

 tainous parts of Southern Europe, and is also met with 

 in some portions of the Pyrenees and Sierra Nevada. The 

 adult male in summer has the upper parts pearl-grey ; top 

 of head, tinged with brown ; rump and upper tail-coverts, 

 blackish ; tail, black, tipped with grey and white ; wing- 

 coverts and basal halves of outer webs of primaries, rich 

 crimson ; rest of primaries, dark brown, with conspicuous 



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