It is a popular belief that the pigeons do not stay in places where shootings go on. Wherever shootings go on there are dart boards or target plates around. It seems that the pigeons do recognize the dart boards as symbols of death and stay away from them. The clever factory workers/management have dangled these plates near to the ceiling all over the plant to scare the pigeons.
From what I could gather from the workers, the number of pigeons has drastically decreased. The bull’s eye scares the pigeons indeed!