I did field work in Panama and Ecuador at the same time/place as one of the authors of this paper (Roland Kays; he's also the first person to cross the isthmus

I did field work in Panama and Ecuador at the same time/place as one of the authors of this paper (Roland Kays; he's also the first person to cross the isthmus of Panama on a unicycle). The field work required to find and observe olingos and olinguitos is pretty hairy. They are nocturnal and arboreal. You can radio track them, but first you have to find them and catch them. Not an easy thing to do in the understory at night.