Sometimes farm granaries become especially beautiful when all the oats or wheat are gone, and wind has swept the rough floor clean. Standing inside, we see around us, coming in through the cracks between shrunken wall boards, bands or strips of sunlight. So in a poem about imprisonment, one sees a little light.
But how many birds have died trapped in these granaries. The bird, seeing the bands of light, flutters up the walls and falls back again and again. The way out is where the rats enter and leave; but the rat’s hole is low to the floor. Writers, be careful then by showing the sunlight on the walls not to promise the anxious and panicky blackbirds a way out!