Accompanied by the sign "For all Liverpool's Liver Birds", the mural was painted by artist Paul Curtis. But the beauty might be short lived, as the wall is due to be pulled down at any time.
Shortly after the wings were painted, they were joined by this Banksy-style comment on art and justice. Apparently some of Banksy's works were removed controversially by a developer nearby and are in a private collection, rather than being displayed in a city street art gallery as originally proposed.