From a scientific point of view, the sensory prediction ability of animals is many times stronger than that of humans. They can predict natural disasters, such as earthquakes and floods, and they can nest in your home. Hehe, it proves that your feng shui, aura and master are excellent. Don't destroy them, drive them away!
Sparrows nest in cracks in your window, but they don't fly into the house. You can let the birds stay or drive them away.