"The practice field and sports complex in a posh New Jersey suburb that the Eagles have chosen as their lockout workout home didn't buzz Monday with the sound of footballs slicing through the air or sneakers zipping through the turf surface.

Almost every day since quarterback Michael Vick and some teammates staged a passing camp in mid May, at least two or three Eagles have shown up to get in some work as the labor dispute has climbed into its third month.

But participation has gradually dwindled, and Monday even some mainstays -- wide receiver Jason Avant and quarterback Mike Kafka -- were nowhere to be found.

While some NFL teams have gathered in masses for lockout camps -- the Raiders and Patriots reportedly conducted camps where more than half the roster showed up -- the Eagles aren't overly concerned about their fractured offseason.

"You can go out there and do them organized things, but you can't simulate that kind of stuff right there with pads and stuff like that on," said linebacker Jamar Chaney after a workout at the Power Train Institute in Cherry Hill, about 10 miles up the road from the empty field.

"If people think it's holding us back, or another team thinks it's going to hold us back, they'll find out when we get back on the field."

Part of the problem in organizing a team-wide practice is the high turnover rate on coach Andy Reid's staff since the end of the 2011 season and uncertainty on the defense.

The team has five new coaches on defense -- including new defensive coordinator Juan Castillo, who converted from longtime offensive line coach -- and a new offensive line coach."