It took me a while to find out what the problem was but I was successful. I looked behind the open barn door on the wall side and found an extra animal that was not as popular as the rest for some reason.
I encouraged it, gently, to leave but the spot seemed to agree with it and it was not coming out. Finally, I left it where it was and did some other chores away from the barn and then went back to see if it had changed its mind. It had. It was no where to be seen.
I have seen this little animal a few times during the early morning but have not been able to get a photo. This time I was more lucky as I had my headlamp with me.
Striped Skunk - Mephitis mephitis