Flier perhaps found no end boring? (5)

I believe the answer is:

robin

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'flier' is the definition.
(robin is a kind of birdanimal)

I can't explain the rest of the clue.

(Other definitions for robin that I've seen before include "Christmas songbird" , "good fellow in the D [DREAM]" , "Small brown thrush" , "Red-breasted Christmas card bird" , "boy" .)

I've seen this clue in the Evening Standard.

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