Bird similar to a swallow, but with a shorter tail (6)

I believe the answer is:

martin

(Other definitions for martin that I've seen before include "Dickens novel partly set in America" , "Bird of the swallow family" , "Dickens novel featuring Mr Pecksniff" , "Kind of swallow" , "Small swallow" .)

I've seen this clue in The Sunday Times and The Times.

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