Abstract: The invention relates to a device for deterring birds from landing in a defined area, for example on maritime vessels, without causing physical damage, said device comprising a vertically positionable rotary actuating shaft whereon a retractably connected pair of rods (3) is arranged at the top by means of a hinged joint, such that said two rods (3) are able to extend horizontally and perpendicularly in relation to the actuating shaft and opposite each other, said actuating shaft (2) being mounted on a support (4) provided with hinge means in the lower part, that can angularly fold down said support (4) in relation to a base body (5). The lower part of said actuating shaft (2) is in contact with a spherical region arranged inside said support (4).