Just above the vent stack on the roof of the barn you can see the silhouette of Mother Mary on her Donkey.
You can also see winged creatures off to the left proceeding her and just below the donkey's head is Joseph's face.
To see this clearer, click on the larger photo above and look closely. You can see the face and head of Joseph with his hair line blending in with the donkey's head. This would be how things would have been when Mary, Jesus and Joseph would have left the manger to go to Egypt until Herod was no longer on the throne.
It appears she is carrying Jesus. This photo was taken on Christmas Day at the site of Jonathan Edwards "Great Awakening" in the 1700's.