My neighbor came over tonight looking for help getting a snake out of his Martin Birdhouse. We quickly discovered it was two Black Ratsnakes, one was 5' or longer and pretty heavily bodied. I eventually got them bagged and went to release them, the larger immediately started lining up on the smaller and started biting her back and wrapped her up.
Female
They separated after 15 minutes or so and headed off to safety. Maybe I'll see some babies slithering around later this summer!