A couple of people have noticed a bit of an indentation in the nest, which in the image on the right is a bit obscured by the video pause icon in the middle of the screen. This image was captured from the nest camera at about 5:00 pm on Oct 30. The image below was captured on Oct 4.
Notice that in the newer image the pine straw looks a lot more compacted and smoothed over, and what wasn’t much of a feature now looks like a definite indentation being shaped in the nest. So our friends at Cornell Lab of Ornithology went back through the footage and discovered a Great Horned Owl checking out the nest and moving around in it. We’ll upload some footage as soon as we get it ready. An interesting turn of events!