I would hardly call a 'Chang a 'warbird', to my knowledge they never saw active combat.
Even lil old CT4s and Winjeels get called warbirds RoxyChick. There was a ground attack variant of the CJ6 though I'm not sure if it ever saw combat.
Warbird is a term used to describe vintage military aircraft. Although the term originally implied piston driven aircraft from the World War II era, it is now often extended to include all military aircraft, including jet powered aircraft, that are no longer in military service
Warbird - Wikipedia, the free encyclopedia