Ferguson didn't practice Thursday due to an illness, Adam Caplan of SiriusXM NFL Radio reports.
Ferguson caught seven of 10 targets for 71 yards in Sunday's 27-21 loss to the Falcons.
Ferguson (knee) doesn't have an injury designation for Sunday's game against the Ravens, Mike Garafolo of NFL Network reports.
Ferguson (knee) practiced in a limited fashion, Jon Machota of The Athletic reports.
Ferguson (knee) was limited at practice Wednesday, Nick Harris of the Fort Worth Star-Telegram reports.
Ferguson (knee) is participating in Wednesday's practice, Calvin Watkins of The Dallas Morning News reports.
Cowboys executive vice president Stephen Jones said Monday that Ferguson (knee) was "really close" to playing in Sunday's 44-19 loss to the Saints and that "the expectation is for him to be back" Week 3 against the Ravens, Jon Machota of The Athletic reports.
Ferguson (knee) is inactive for Sunday's game against the Saints.
Ferguson (knee) is listed as doubtful for Sunday's game against New Orleans, Mike Triplett of NewOrleans.Football reports.
Ferguson (knee) didn't practice Friday, but coach Mike McCarthy said the tight end could still play Sunday against the Saints if he practices Saturday, Patrick Walker of dallascowboys.com reports.