The player's girlfriend, Katie Milligan, suffered a broken eye socket and cuts to her eye during an altercation at Bird's flat in August last year. The Appeal Court judge believed the evidence of Bird and Milligan that her injury was an accident, caused when an "agitated" and "irrational" Milligan lunged at him with a glass in her hand.
Bird was sentenced in June to at least eight months' jail time, with a maximum of 16 months, after being found guilty of reckless wounding.
Bird has been on bail after lodging an appeal following the guilty verdict.
Bird and his girlfriend then claimed it was all an accident, blaming Milligan's drug use and aggression, and saying she was responsible for starting the fight.