Hi Steve, thank you for viewing and commenting. This rookery is surrounded by houses, a small pond with a island that the birds feel safe to nest on. The light brown is a reflection of one of the houses. I revisited the images and found this one a frame or two later in the same series. The light brown is less intruding and the 16x9 crops helps eliminate some of it. I also lightened the shadows on the bird a tad. Here is a repost.