A speaker?

My brother has made a bird table. It caught my attention because there was no table. Instead he had taken one of the many defunct, unwanted music speakers in his room and converted it. The speaker was an old wooden box-shape. He cut a whole in its side, removed the wiring and filled it with seeds. He then placed the box outside his bedroom window overlooking the garden. This caught my imagination because of the potential of an unlikely but charming situation. A small song bird might fly into this former speaker and begin to sing. In doing so the speaker would function as a speaker again.