A portable, boat-supported duck blind that is collapsible and adjustable to fit most conventional boats. The boat mounted blind of the present invention includes two substantially identical elongated members, said members are positioned parallel to each other along both sides of the boat, front and rear cross-posts are connected to the elongated members, and first and second upper rails are connected to the cross-posts. Each elongated member is attached to a side of the boat with a pair of bendable posts, and a pair of cylinders is attached to the boat and the elongated members to assist the user in raising or collapsing the blind with minimal effort.