Buffalo Bills LB Lorenzo Alexander (ankle), CB Ronald Darby (concussion), OT Cordy Glenn (back), WR Percy Harvin (migraines) and SS James Ihedigbo (ankle) did not participate in practice Wednesday, Nov. 30. FS Sergio Brown (hamstring), LB Preston Brown (wrist), DT Marcell Dareus (abdomen), OG Richie Incognito (neck) and OG John Miller (shoulder) were limited during practice. LB Zach Brown (hand) fully participated in practice.