Prime Minister Narendra Modi on Sunday paid tribute to former Odisha chief minister Biju Patnaik on his birth anniversary, saying he was a dynamic and multi-faceted personality who made an unparalleled contribution towards the state's progress.A freedom fighter and a prominent regional satrap who was a key member of anti-Congress alliances for decades, Biju Patnaik served as Odisha chief minister twice. He was also a Union minister.