BAGSHOT, England -- The Detroit Lions’ banged-up skill position players continue to take turns sitting out practice.

While Calvin Johnson practiced for the second straight day Thursday -- the first time he’s practiced on back-to-back days since before Week 3 against Green Bay -- the Lions were still without their top three tight ends and a top running back on Thursday.

Brandon Pettigrew, Joseph Fauria, Eric Ebron and Reggie Bush all sat out the portion of practice open to the media at Pennyhill Park Hotel and Spa on Thursday. The three tight ends did not practice Wednesday, either, while Bush’s absence Thursday is somewhat of a surprise.

Bush had said both Tuesday and Wednesday he is not 100 percent, but plans to play Sunday in Wembley Stadium against the Atlanta Falcons.

If Bush does not play Sunday against Atlanta, it would mean more carries and touches for Joique Bell and Theo Riddick. Riddick sat out last Sunday’s game against New Orleans with a hamstring injury.

Right now, the healthy Lions’ tight ends are Kellen Davis and Jordan Thompson. Both were signed within the last week, although Thompson was promoted from the practice squad.

In good news for the Lions, defensive end Ezekiel Ansah returned to practice after missing Wednesday so he would appear on track to play against the Falcons.