Device to scare away birds comprising: a main bar (1) held from its central part by means of an articulation element (2) to a fixing post (3) defining an axis of rotation, in such a way that it allows it to perform a rotary movement and a rocking movement up below, mechanical systems (4) located at the ends of the main bar (1) that have the ability to perform movements independently, the device being characterized in that: the main bar (1) is fixed on the upper end of a pole of support (3) defining an axis of rotation, with respect to which this bar can rotate perpendicularly as well as swing up and down, moreover, on the other hand, the mechanical systems (4) that are arranged at the ends of the bar, are formed of main form by two laminar structures (5), which can form a variable angle to each other, being articulated in a rod (6) that defines a common axis, arranging this rod at one end of a fixation n (7) through which it is fixed to one end of the main bar, so as to form an adjustable angle to the plane defined by the rotation of the main bar. (Machine-translation by Google Translate, not legally binding)1. Dispositivo para ahuyentar pájaros que comprende: Una barra principal (1) sujeta desde su parte central mediante un elemento de articulación (2) a un poste de fijación (3) que define un eje de giro, en tal forma que le permite realizar un movimiento giratorio y un movimiento de balanceo arriba abajo, unos sistemas mecánicos (4) situados en los extremos de la barra principal (1) que tienen capacidad de realizar movimientos de forma independiente, estando el dispositivo caracterizado porque: la barra principal (1) está fijada sobre el extremo superior de un poste de soporte (3) que define un eje de giro, respecto del que esta barra puede girar perpendicularmente así como balancearse arriba abajo, además por otra parte, los sistemas mecánicos (4) que están dispuestos en los extremos de la barra, están formados de forma principal por dos estructuras laminares (5)
