This feisty house wren attacks a curious tree swallow who had been peering into the birdhouse where the wren had been building a nest. I had thought that the birdhouse was clearly an integral part of the nature story here, but I asked Rick Cloran his opinion about it qualifying under the PSA Nature rules. He agreed that it was an integral part of the nature story, but felt most judges would not get that from this one image and would DQ it. I therefore entered it as "Open"