Felder had been sidelined by a groin injury for part of training camp and placed on the team's reserve/injured list last week.
Also Tuesday, the Bills announced the signing of tight end D.J. Tialavea to round out their 10-player practice squad. The undrafted rookie signed with Jacksonville this offseason before being cut by the Jaguars last week.
He's listed at 6-foot-4 and 260 pounds.
The Bills lack depth at tight end with Lee Smith's status uncertain because of a toe injury. That leaves Buffalo with only two healthy tight ends — starter Scott Chandler and backup Chris Gragg — in preparing to open the season at Chicago on Sunday.