Darden (concussion) was a full participant at Thursday's practice, Carmen Vitali of the Buccaneers' official site reports.
The 22-year-old picked up the head injury in Week 12 versus the Colts but appears like he will have a shot at being available for Sunday's matchup with the Falcons. He wore a non-contact jersey Thursday, so if he's able to take contact Friday, it would be an encouraging sign. Darden has operated mostly as a return specialist this season, racking up 212 kick-return yards and 87 yards on punts.