We have seen barn owls nesting as little as ten feet apart and there are plenty of instances in which several pairs were found nesting in a single barn. To stay on the safe side, we would recommend separating boxes by 50 to 100 feet minimum.
https://www.barnowlbox.com/wp-content/uploads/2017/05/barnowlbox_header.png00MARK BROWNINGhttps://www.barnowlbox.com/wp-content/uploads/2017/05/barnowlbox_header.pngMARK BROWNING2021-05-15 20:31:582021-05-19 08:53:34How close together can barn owl boxes be installed?