Conversation so far:
What started the feud?
Kerry and his elder brothers Kevin and David defeated the Fabulous Freebirds in a two out of three falls match.
When did he receive the heavyweight championship title?
May 6, 1984.
Who did he compete against?
he beat "Nature Boy" Ric Flair.
Did anyone take the championship from him during that time?
Flair.

Question: What happened with the Fabulous Freebirds?
Self-contained rewrite: What happened with the Fabulous Freebirds?