We are now on year 4 on our box, all 4 years including the current nest that was just started have been successful. Im considering putting a barn owl box close to the tree line. Does anybody know or think this may disrupt the nesting. It is also important to note that when the babies 1st leave the box they head to the woods in the picture. Im just trying to find a natural predator to blackbirds, they love my garden tomatoes. But my bluebird box is farrr more important.