THE BIRD-LIFE OF LONDON 
The adult Swift has the general colour of the plumage 
blackish brown, merging into greyish white on the throat, 
and the upper parts possess a bronze-like sheen. ‘The 
tail has only ten feathers. Bull black; tarsi covered with 
dark brown plumes; toes dark brown; irides brown. 
Length about 7% inches. ‘The nestling has the white 
patch on the throat purer in tint, and most of the 
feathers of the upper parts have greyish margins. 
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