Wednesday's move came after Daugavins played 19 games with the Senators this season with one goal and two assists. In 85 career games since being drafted by the Senators in the third round in 2006, the forward has six goals and eight assists.
In a shootout against the Bruins on March 11, Daugavins advanced the puck by pressing on it with the top of his stick. He then spun in front of goalie Tuukka Rask, who made the save. Boston won 3-2.
The Bruins also recalled defenseman Torey Krug from Providence of the AHL before Wednesday night's game against the Montreal Canadiens.