Nathan Horton skated on Sunday, as he continues to make positive steps in his recovery from a concussion. "When you see him in full practice with us, that's going to be the next sign," said coach Claude Julien. "Until then that's basically all I can tell you. You take steps and he's got to stay symptom-free. You go from the bike, to the ice, to contact. You've just got to make sure the next day, or the next few days, there's no setbacks." Horton has missed Boston's past five games.