My garage had old garage doors, and the iron on them had worn thin over time. Rust in certain locations made it possible for the birds to enter my garage. It's true that I didn't find out about it right away; rather, I did so after a while, when noisy chirping one evening. At that point, I realized that the outdated garage door needed to be replaced before someone else moved in. Choosing new doors took me two weeks, and I went with the premium Jeld-Wen composite garage doors https://fixgaragedoors.ca/services. However, I held off on changing the door until the chicks were mature enough to fly on their own.