Could also be stuck down the side of the neck. I am wondering if this could be one of those moths that was flying down at the same angle at time of the pic. They look similar to that.

From last night. Is this an arrow or tracer bug? My tripod is 10 yards to the left of the camera by the way.

I would assume that yours is not an arrow. If your tripod has any height to it the line should be angled diagonal from left to right not horizontal. Unless you are hunting out of a ground blind or course. The OP looks more like an arrow because it looks like it has fletchings on it, but that could just be the path of a bug.

I get UFO's all the time on my cameras.

My daughter shot a buck on youth weekend a few years back that had been shot in the face the previous year. He had healed up completely except that the teeth in one side of his jaw where dislocated. He was huge. Amazing what they can live through.
We never could tell for sure it it was an arrow or a bullet. Considering the bone fragments and busted jaw, we figured a bullet.
Flag shows the shot path.

It isn't unheard of....

Before you rush to judge someone deer do jump the string and do some weird things. A buddy of mine that I use to arhcery hunt with had a perfect broadside shot and the deer jumped the string. He hit it in the back of the head which ended up in the exact spot he was aiming for. There was an impression in the dirt from where his belly hit.

Before you rush to judge someone deer do jump the string and do some weird things. A buddy of mine that I use to arhcery hunt with had a perfect broadside shot and the deer jumped the string. He hit it in the back of the head which ended up in the exact spot he was aiming for. There was an impression in the dirt from where his belly hit.