Yes! In Munich I rub out a large white American stork (6)

I believe the answer is:

jabiru

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'a large white american stork' is the definition.
'jabiru' can be an answer for 'stork' (jabiru is a kind of stork). I'm unsure of the 'a large white american' bit.

'yes in munich i rub out' is the wordplay.
'yes in munich' becomes 'jab' (I can't explain this - if you can you should believe this answer much more).
'out' means to remove the last letter.
'rub' with its last letter taken off is 'ru'.
'jab'+'i'+'ru'='JABIRU'

Can you help me to learn more?

(Another definition for jabiru that I've seen is " Large stork".)

I've seen this clue in the Sydney Morning Herald.

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