Edelman at practice; several missing

FOXBOROUGH, Mass. -- New England Patriots wide receiver Julian Edelman was present for the start of Wednesday's full-pads practice, less than a week after suffering a head injury against the New York Jets.

Edelman's presence is a positive sign for his availability Sunday against the Miami Dolphins, and returns some depth to a receiver position that had been thinned over recent weeks.

Newly re-signed practice-squad wide receiver Jeremy Ebert, who was drafted by New England in April and later released, was on the field, wearing No. 17.

Meanwhile, the Patriots were without four offensive linemen for the start of Wednesday's practice: guards Logan Mankins (ankle/calf) and Dan Connolly (back), and tackles Sebastian Vollmer (knee/back) and Markus Zusevics (unknown).

Vollmer and Mankins missed last Thursday's game against the Jets, while Connolly started and played most of the game. Zusevics was activated off the NFI list last week and had practiced the previous three weeks.

Defensive end Chandler Jones (ankle) and tight end Rob Gronkowski (forearm/hip) remained out for the start of a second straight week.

The Patriots practiced outdoors in full pads and in cold conditions on Wednesday, opting to replicate the grass surface of Miami. Had they moved indoors and turned up the heat, they would have practiced on turf.