
I’m not sure differentiation is necessary. Critter goes by, light comes on, nothing else moves, light goes off. Happens all the time with the (obnoxiously bright) motion lights my neighbors have.
So far as the sensor goes, have them networked. Activating one lights up the next light in either direction, and across the street. Then rolls with the movement. Part of my brain is thinking that bad actors would find a way to abuse this, though.
Username checks out.