Cardiff City have played in the English Football League since the 1920 -- 21 season , climbing to Division 1 after one season .
The Bluebirds ' ( as Cardiff City are known ) new home is the Cardiff City Stadium , which they share with Cardiff Blues .
Bluebirds   have played in the English Football League since the 1920 -- 21 season , climbing to Division 1 after one season .
The Bluebirds ' ( as Cardiff City are known ) new home is the Cardiff City Stadium , which they share with Cardiff Blues .