The RL-99 "redleg mallard" duck call. The RL-99 "redleg mallard" duck call designed to give the finest impersonation of a "susie mallard", this duck call is hand tuned by professional callers and blows wet. double "O" ring construction insures a tight seal; while the double-reed system famous in the "DR-85" provides resonance. when the wariest of late season, migrating mallard ducks arrive our "redleg" mallard duck call will keep them committed to your rig. haydel the duck's built in.