While Pigeons may be smart, They are really fearful by massive going objects. To discourage pigeons from a house, attach the balloons or Seashore balls to spots frequented by pigeons. You can also be creative and attract eyes on the balloons or beach balls to even further scare the pigeons. https://martin3wfov.webdesign96.com/32021265/installing-a-pigeon-repellent-in-arar-an-overview