Not slow to identify the bird (5)

I believe the answer is:

swift

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'bird' is the definition.
(I know that swift is a type of apodiform bird)

I don't understand the rest of the clue.

(Other definitions for swift that I've seen before include "Jonathan . . . . . wrote 'Gulliver's Travels'" , "Bird; happening quickly" , "Quick Irish satirist?" , "Quick, prompt" , "Swallow-like bird" .)

I've seen this clue in the Evening Standard.

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