Can you see the Bittern?

Have you ever seen an American Bittern? They are not easy to spot. I was aware of their penchant for standing in dry reeds with beak pointing upwards (and even swaying "in the wind") but I had never seen it in real life until a couple of week-ends ago. I managed to get a few shots. There was one where the bird was quite "invisible" but I thought this one was a better choice for the blog.

By the way, they also have an amazing call which to me sounds like a loud and deep "glug, glug". I saw this one doing it and it is interesting to watch as well as to hear because the bird inflates its throat to make the noise.