The Blues kept up their promotion hopes as they defeated lowly Rovers by one goal, with Stephen Gleeson knocking David Cotterill’s cross into the top corner after 64 minutes.
Victory puts Gary Rowett’s men sixth, while Owen Coyle’s struggles are third from bottom in the Championship.
Dean Smith’s Bees lost ground on the early promotion candidates as they were held to a stalemate as neither side were able to make a breakthrough at Griffin Park.
A Tammy Abraham inspired Robins side came from behind to defeat the Tricky Trees at Ashton Gate.
Apostolos Vellios had given Forest a first half lead but the in-form Abraham levelled with his tenth Championship strike of the campaign in the 65th minute and three minutes later he assisted Jamie Paterson, against his former club, to seal the turnaround.