Captured on feeder cam. The possibilities that have been suggested are Carolina wren, Bewick's wren, marsh wren. I first thought Carolina wren. It definitely has a bold eye stripe, but the coloring seems quite drab. It actually looks closer to a Bewick's based on other photos I've looked at, but that would be quite rare and we'd need more confirmation beyond this feedercam image. And it's hard to tell from this image whether it has the correct markings for a marsh wren. I've spent some time out in the yard to see if I can get a visual on the bird, but I haven't seen any sign of it beyond feeder cam.