African swamp-dweller quiet over online invoice (8)

I believe the answer is:

shoebill

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'african swamp-dweller' is the definition.
I can't tell whether this defines the answer.

'quiet over online invoice' is the wordplay.
'quiet' becomes 'sh' (both can be said to tell someone to be quiet).
'over' becomes 'o' (cricket abbreviation).
'online' becomes 'e' (as in e-mail or e-commerce).
'invoice' becomes 'bill' (synonyms).
'sh'+'o'+'e'+'bill'='SHOEBILL'

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(Another definition for shoebill that I've seen is " African stork".)

I've seen this clue in The Times.

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