Kuqi is the younger brother of Blackburn striker Shefki

Kuqi, 22, who recently ended a loan stint at Blackpool, will stay at London Road through to the end of the season.

"He gives us another option," Posh boss Steve Bleasdale told the club website. "He's a quality player who is obviously looking to get games under his belt."

The Finland under-21 international joined Birmingham from FC Lahti in a �400,000 deal last January but is yet to make his senior debut for the Blues.

"He's still young, he wants to improve as a player and we're delighted to have him here," Bleasdale added.

"I know that our existing strikers will be looking forward to playing alongside him."