THE BIRD-LIFE OF LONDON 
buff ; the tail-feathers are rigid, brown in tint, with yellow 
shafts. ‘The under parts are silver-white, suffused with 
buff on the flanks and under tail-coverts. Bill dark 
brown, paler below; tarsi and toes brown; irides brown. 
Length about 5 inches. ‘The nestling resembles the adult 
in colour, but has a shorter and nearly straight bill. 
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