Tonight we saw a strange bird on a rock near the marsh. sinboy said it looked a bit like a kiwi. It was about 18" standing up, and had a longish sharp beak, a round head, and almost no neck; the feathers seemed greyish and fairly short. When it saw us, it flew off very low over the water. Its wingspan was maybe three feet. I would say it looked owlish except the beak seemed too long. It was dark, though, so hard to say. Any ideas what it could be?