Ugbo, a former Chelsea youngster who joined on loan from French club Troyes in the January transfer window, opened his account in the 15th minute and then added a crucial second after the break.
Birmingham bossed large parts of the game but failed to take their chances and β now just six points better off β will be one of the teams the Owls are eyeing to catch.
In the seventh minute, Juninho Bacuna blazed an effort over after good work from Jordan James on the left and soon after, Lee Buchanan forced Owls goalkeeper James Beadle into a good stretching save. And less than a minute later, Wednesday took the lead as they went straight up the other end and scored.
They worked the ball out to the right where Ian Poveda danced into the area and cut it back to Ugbo, who fired home from six yards out to open his Wednesday account.
Wednesday had their moments and missed a great chance to double their lead in the 43rd minute but Ugbo shot wide when being slipped through by Ian Poveda. The hosts started the second half well and Ugbo might have doubled the lead as he was not penalised for coming back from an offside position but saw his shot blocked by Neil Etheridge. The year-old could not miss his next chance though as Marvin Johnson stood up a teasing cross to the far post which Ugbo nodded in.
