City birds eat without ending (7)
I believe the answer is:
swansea
'city' is the definition.
(Swansea is an example)
'birds eat without ending' is the wordplay.
I cannot really understand how this works, but
'birds' could be 'swans' (swan is a kind of bird) and 'swans' is found within the answer.
The remaining letters 'ea' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for swansea that I've seen before include "Welsh port" , "Birthplace of Dylan Thomas" , "South Wales port" , "Home of the DVLA" , "coastal location" .)