A SYSTEM OF PREVENTING BIRDS FROM BUILDING CORNER NESTS COMPRISING OF A PLURALITY OF HORIZONTAL PANELS (5) STACKED ON TOP OF EACH OTHER, WHEREIN SAID PANELS HAS A FIXING CORNER (10) BEING FITTED AT WALL CORNERS OF NEST FARMING ENCLOSURE AND A PROTRUDING CORNER (20) STRETCHING OUTWARDLY THAT DIAGONAL TO SAID FIXING CORNER. (MOST ILLUSTRATED BY FIGURE 1)