Yeah, my biggest concern is that I will be keeping my hay inside and also one end of my horse runs will be inside (along with their water tubs) and I don't want them to have bird poo in their water tubs and on their hay. I don't begrudge them the noise or anything other than the crap they get everywhere. There is an old abandoned house just across the road from the barn so maybe if I keep chasing them off, they will nest there. The paint sounds nice but it's going to be a big barn and that would be a lot of paint. LOL.
I will probably just make sure to keep the nests knocked down and hang some snakes and stuff from the rafters to keep them out. Keep an eye out for some real snakes too ( I always try to wrangle bullsnakes anyway and put them in the barn). I really appreciate the help ya'll.