Ordinarily, these NPS critters would have to plan on going home and living among the human citizens.
For some strange reason, they are behaving like they expect the human citizens to disappear, or something.
Do you suppose it's because they are actually a bunch of left-over tree huggers, finally showing their true colors?
Q: What do you get when you cross a union-thug with a tree-hugger?
A: A Forest Ranger.