Barnsley let a two goal lead slip and failed to win for the first time since October 2014 when they led Notts County 2-0 at Oakwell but went on to lose 3-2.
Marc Roberts became the fourth Barnsley player to be shown a red card this season and it is the eighth shown in a Barnsley match in 2016-2017, the most since 10 were shown in the whole of 2014-2015.
This was the first time this season that Barnsley have avoided defeat when going down to ten men.
There were as many as three goals in the first half of a Barnsley game for the fourth time this season, three of them have come in the last seven matches.
Barnsley are now undefeated in both of the last two years in their final game of it, prior to this they had lost three in a row.
Barnsley end 2016 with 35 points in this current campaign, their most at the end of a year since the 2005-2006 League One promotion season.
It has been a remarkable 2016 for Barnsley who in total picked up 85 points in the year- only Brighton (96) and Scunthorpe (91) collected more across the top four tiers.
Sam Morsy has now been booked in four of the last six matches.
Sam Winnall netted his 11th goal of the season and he has now scored in three successive matches, the first Barnsley player to do this since Conor Hourihane netted in succession against Peterborough, Sheffield United and Colchester in December of last year.
Those three games in a row for Winnall have brought him a total of four goals- three of them headers. He now has 48 goals in 94 starts putting him joint 28th on the club’s all time list, level with David Currie.
Hourihane has now assisted a Winnall goal on five occasions this season and for the third match in a row. The Irishman ends 2016 with the most assists of any player in the top four tiers across the 12 months (19) just pipping Marcus Maddison (18)
Birmingham scored with both their shots on target, the first time an opponent has scored with all their shots on target since Port Vale inflicted on Barnsley their eighth straight league defeat in November 2015 with both of their shots on target.
Barnsley have now conceded six goals from the penalty spot this season – they did not concede ANY last season. It is the most they have conceded since 2010-2011 when they conceded 10.
Barnsley have now scored 42 goals in their 24 league matches – moving them into second outright in the division, only Newcastle (48) have scored more.
Barnsley have failed to beat Birmingham at Oakwell in any of the past five meetings now but they did end a run of three successive home defeats against them.