No he's not joking. There is no way to differentiate buck from doe droppings. No way at all.
^^^ I Agree. Had a guy tell me once that a bucks droppings will be scattered out on the ground because he want stop to handle his business while a dies droppings will be in a pile be they will stop to handle there's. I wanted to call him out on it but he was my boss with an ego so it was in my best interest to not laugh in his face.