Bergeron, Marchand, Seguin, Lucic, Kelly, Chara, Andrew Ference, Dennis Seidenberg, Adam McQuaid, Shawn Thornton, Gregory Campbell, and Tuukka Rask practiced at BU Wednesday. The Bruins are scheduled to return to Ristuccia Arena, their usual practice facility, Thursday. Among the players who have yet to participate in informal practices are Horton, Krejci, Rich Peverley, Daniel Paille, and Anton Khudobin . . . The Bruins will recall four forwards and two defensemen from Providence to participate in a shortened training camp, which is expected to start Sunday. Chris Bourque, Lane MacDermid, Ryan Spooner, Jamie Tardif, Matt Bartkowski, and David Warsofsky will skate with the varsity, according to the Providence Journal. It would give the Bruins the five lines and four defense pairings that GM Peter Chiarelli had anticipated. McQuaid, who is rehabbing from surgery to remove a blood clot, might not be ready at the start of camp.