I have seen them, but not when on stand. I have seen remnants of one in front of my stand that took place over night. Hair all over, leaves turned up, scrapes in the ground, etc. I did witness one that was about 100 yards off and could hear them, but ever so slightly. It was two equal looking bucks (very nice) and along comes number three...and he was a big boy. He barged right in the middle of the two of them and created a threesome. The two " smaller" bucks knew that they were outgunned and left after exchanging their headgear collisions several times with the big guy.