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One tweeting about daughter getting found (8)

Ross

I believe the answer is:

redstart

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'one tweeting' is the definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.

'about daughter getting found' is the wordplay.
'about' becomes 're' ('re' means regarding or about).
'daughter' becomes 'd' (genealogical abbreviation).
'getting' says to put letters next to each other.
'found' becomes 'start' (as in to establish).
're'+'d'+'start'='REDSTART'

Can you help me to learn more?

(Other definitions for redstart that I've seen before include "Bird (coloured opening!)" , "Singer" , "bird from Europe" , "Flier" , "winger" .)

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