Birdwire System (Low ot Medium Pressure)

This system is cost effective and versatile and has been used for many years as a deterrent against Feral pigeons (Columba livia) and Seagulls (Larus spp.). However, it does have its limitations and is not effective against Sparrows (Passer domesticus) or Starlings (Sturnus vulgaris), or where Pigeons or Seagulls are using the are as a night roost.
 

 
The concept is to install a stainless steel post into the structure and attached a thin strand of stainless steel wire, tensioned with a spring, just above a ledge or other feature used by the pest birds in question, so that they are prevented from landing. Several strands may be used to create an exclusion zone to the pest birds.
 
This is a totally humane system and can be installed anywhere on a building including window ledges, wide or delicate ledges, gutters and beams, pipes and rails, signs and roof ridges. The stainless steel birdposts that hold the springs and tensioned birdwire may be installed by means of drilling into the structure or by using an architectural adhesive, where the structure is delicate such as period stonework, or where lead flashing exists.