A flap door having a soft hinge for a lay-down hunting blind comprises a fabric door frame cover, a door frame receiving pocket formed in the door frame cover, a door frame enclosed within the door frame receiving pocket supporting the door frame cover in planar configuration, the door frame having interconnected U-shaped head end and toe end support members having curved head end and toe end hinge corners supported on the framework of the hunting blinds enclosure, a hinge end of the door frame cover attached to one of two opposing lateral edges of the top opening of the fabric enclosure of the blind without any direct mechanical interconnection between the door frame and the support framework of the enclosure such that a pair of flap doors may be moved between opened and closed configurations over the top opening.