When you stand at the edge of a lush grassy hill, a rabbit scrambles out of somewhere. Smallish wings flutter to life on each hop, just before his jumps reach the fullest height.
"Hi, I'm the keeper of the boundaries!" he says while coming to a stop.
He points to the very thick grasses in the immediate area. "See? You'd never know a bunch of rabbits live here. Please be careful to not leave obvious signs of rabbit habitation on the wrong side of the line. We're trying to see if looking like the way human burrows on the outside, will keep other predators away, you know?"