A single video doesn’t mean anything. If all the buffalo leave then its cause for concern.
Actually I would like to know that also.
Are the buffalo actually “leaving” the park, or were they just huffing down the road at that time?
I agree it is somewhat concerning if they are fleeing the park, but do we have any evidence of that?
You could be right. However, it begs the question...has this behavior happened before, in this way and at this location? Are there signs of other large animals common to the area behaving in this way or other unusual behaviors. Interesting video, the bison were moving at a pretty good clip, and they were using the road, not moving over open land.