Police are searching for a father and son after reports they have been shooting squirrels with a pellet gun.
The incident took place at Manor Park in Sutton towards the end of May.
A woman told the park keeper a man had boasted to her about killing a squirrel there.
He has been described as bald, but there are no further details on the appearance of the two suspects.
Police were only informed of the incident on Friday, June 27.
If you know anything please call Sutton Police on 101, or phone Crimestoppers anonymously on 0800 555 111.