Did you know sheep like to eat trees? I mean that they really, truly like to eat trees more than anything else in the world? Treetops = Sheep Crack.
Most of our land is heavily wooded. We have all these little trees that need to come down so that the grass can grow. We're not going to cut them all down, of course. I want to leave clumps of trees standing here and there for shade. Most of them have to go though, so I break them down now and then as treats for the sheep.
They come running when they hear the trunk snap!