Davis (ankle) remained limited at practice Thursday, Chris Brown of the Bills' official site reports.
Matt Parrino of The Syracuse Post-Standard notes that while Davis practiced with his right ankle heavily taped up Thursday, the wideout "seemed to hold up OK after some hard stops." For his part, Davis has indicated that he's 100 percent optimistic about playing Sunday against the Dolphins, a notion that would be solidified by a full practice listing for him Friday.