Bird seen back in Novosibirsk (4)
I believe the answer is:
ibis
'bird' is the definition.
(ibis is a kind of bird)
'back in novosibirsk' is the wordplay.
'back' is a reversal indicator.
'in' indicates a hidden word.
'sibi' is hidden in the letters of 'novosibirsk'.
'sibi' reversed gives 'IBIS'.
'seen' is the link.
(Other definitions for ibis that I've seen before include "Flier" , "Long-legged wading bird" , "Large wading bird" , "Wading bird sacred to the Egyptians" , "Retreat" .)