INJURIES: Birk (back spasms) and rookie outside linebacker Courtney Upshaw (bruised right shoulder) returned to practice, snapping a streak of eight consecutive absences. Rookie running back Bernard Pierce (hamstring) participated after sitting out seven straight practices. Defensive tackle Arthur Jones (hip flexor) returned after missing five consecutive practices. Cornerback Jimmy Smith (back) took part after sitting out four straight sessions, but he did not get involved in many full-team exercises. Wide receivers Torrey Smith (sprained ankle), Logan Payne (bruised hip) and Tandon Doss (hamstring), cornerbacks Chykie Brown (undisclosed) and rookie Asa Jackson (undisclosed), tight end Ed Dickson (sprained right shoulder), and defensive tackle Ryan McBean (broken left ankle) did not practice. Tight end Dennis Pitta (broken right hand) and inside linebacker Josh Bynes (cracked vertebrae) did not participate for the eighth consecutive day. Wide receiver Patrick Williams (left shin/calf) sat out his seventh straight practice. Inside linebacker Darryl Blackstock (groin) did not take part for the third consecutive day. Players who are on the physically-unable-to-perform list include offensive tackle Jah Reid (strained right calf) and wide receiver/return specialist David Reed (knee surgery). Five-time Prowl Bowl outside linebacker and reigning NFL Defensive Player of the Year Terrell Suggs (torn right Achilles tendon) is on the non-football injury list.