If you want pigeons to obey, you have to make them behave first. First of all, you should let pigeons establish conditioned reflex. When pigeons are on an empty stomach, you should issue a fixed slogan and feed them food, especially the food that pigeons like, such as peanuts and mung beans. Just wait until the pigeons establish conditioned reflex. Remember to let pigeons fly on an empty stomach every day. After flying for a while, all you have to do is issue a fixed slogan and sprinkle food, and the pigeons will come back to eat. You'd better install an inward movable door on the pigeon house, which is like a hanging door that can only be opened from the inside. Pigeons can crash in, but they can't, so you don't have to close the door of the pigeon house because some timid pigeons don't want to go back.