Bird wire and post systems prevent birds from perching on areas such as window ledges, beams, balconies, handrails and rooftops. Our stainless steel plastic coated bird wire should be mounted on posts and brackets. The wire is made tight using springs, so birds will find it unstable when they land on the proofed area. Thus, forcing them to move to a different location. Anti bird wire is an affordable bird proofing option that can be used when more discreet control methods are required.