Lots of house sparrows around here and I hate to have them in the barn. I've reduced the numbers in two ways - the first is by hanging old DVDs in the run. I have them on strings, tied to the overhead hawk netting. They catch the light, shoot bright beams, and generally confuse the sparrows. I also hang one in the coop's pop door (also scared the chickens - so hang it high and let them get used to it, then lower is over a few days.) I learned this trick from a chicken breeder in England. It works! The other thing is, if you have a barn with windows in the loft, to block the light. The sparrows don't like to nest in the dark. I've got live-streaming cams in my coops and you can see the DVD in the pop-door. www.HenCam.com