Crossword Genius

Visibly embarrassed, that is, after recalling duck (5)

Ross

I believe the answer is:

eider

'duck' is the definition.
(eider is a kind of duck)

'visibly embarrassed that is after recalling' is the wordplay.
'visibly embarrassed' becomes 'red'.
'that is' becomes 'ie' ('i.e.' can be a synonym of 'that is').
'after' is a charade indicator (letters next to each other).
'recalling' says the letters should be written backwards.
'red'+'ie'='redie'
'redie' in reverse letter order is 'EIDER'.

(Other definitions for eider that I've seen before include "Reed I turn into a duck" , "I've noted down" , "Downy sea duck" , "Duck with soft feathers" , "Down comes from this" .)

I've seen this clue in The Times.
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