The barn is 40x200 sq feet in a steel building with huge beams and an 80x200 attached arena. Ideal for sparrows. Zillions of them all summer. From time to time there is a dead baby on the floor. They will pick up hair for the nests during shedding season. It’s noisy and they have made a mess of parts of the insulation under the roof. I remember reading an article years ago that said if barn swallows move in they will drive the sparrows out.
It’s true. One pair showed up about 5 years ago, but they skipped the barn. BO’s brother built a really nice condo bird house but they didn’t use it. Each summer a few more showed up and started nested in the beams supporting the roof… This year? Amazing. Absolutely amazing. The sparrows are gone. The swallows are swooping in and out all the time. Very cool to watch. I don’t know how or why they started coming to the farm. There isn’t much we could do to entice them into the barn other than putting up the bird house.
I don’t know what or where I read about this. We are enjoying a new level of peace and quiet.