When we went to the Bolivar beach bird sanctuary on Friday, we were the only people around. As usual, though, there were plenty of birds.
I spent a lot of time trying to photograph Black Terns fishing in pools left by the ebbing tide.
Among the terns and gulls, there were several groups of Black Skimmers. Although much larger than the Black Terns, they were just as hard to photograph.
If you look in the top right corner of the photo below, you will notice one of the Skimmers lying fully prone on the sand. According to my Sibley guide, this is a typical behavior of first year birds.