Bird with celebrity left in the capital of Germany (8)
I believe the answer is:
starling
'bird' is the definition.
(starling is a kind of bird)
'celebrity left in the capital of germany' is the wordplay.
'celebrity' becomes 'star' (a star is a celebrity or famous person).
'left' becomes 'l' (common abbreviation).
'the capital of' suggests taking the first letters.
The first letter of 'germany' is 'g'.
'star'+'l'+'in'+'g'='STARLING'
'with' acts as a link.
(Other definitions for starling that I've seen before include "Stellar bird with blackish speckled feathers" , "Gregarious songbird" , "Noisy bird with speckled feathers - somewhat stellar" , "is naturally a good mimic" , "Bird from heavenly body and fish" .)