I just finished this bird house in the form of an old silo. Of the holes on the front only two actually go all the way in. The wood used is cedar, pine and walnut; all scraps from other projects. I also created the post which has an arm. Next I'm planning to make a wooden sign with an antique tractor created from different colors of woodto put on it. Currently, the wife and I are arguing about what tractor to put on it.