Stainless Steel Fence Spikes (Pack of 4)Wall SpikesKeep pigeons and other pesky birds at bay with these fence and wall spikes. Stainless steel bird spikes are effective and humane that not only deter birds and other animals from landing and perching, but not cause serious damage to them. They act as a visual and physical deterrent which don't allow animals to have access to a certain covered.
eBay