I am just getting back into bird watching and have very little id experience. I saw a bird perched like a carolina wren on a small tree on a small limb at the edge of a big field in rural Missouri. It looked a lot lite a Corolina Wren in color but the head was black with white eye bar, white chin area. It stayed in one spot for at least 10 mins making a chirp call and bouncing his tail up and down each chirp. He made other sounds that were more muffled and harder to tell it came from him like throwing his voice. I am fairly certain he had a yellow bill. His head was not shaped like wren but a bit more like a swallow or fly catcher.