I've seen this a lot with BlacKtail bucks..... For years i had a trail through a very dense section of wild blackberries that i kept trimmed up so the deer would use it. Deer will NOT go though blackberry patches if there is another way around it.
In this case even the mature bucks were using this trail i had blazed, but only at night after dark. One day i was coming down it heading for home and jumped 3 very nice bucks that were bedded down just off nmy trail. two of them were only 2-3 year old deer, and they ran ahead of me to where the trail came right out on the road by my house, then ran right down the road to the next spot into the timber. The mature buck stopped at the road and wouldn't go out onto the pavement. I couldn't see them.... but i could hear the hoofs on the pavement as they came out on the road....i only counted two deer and there were 3.... So i knew right then the big boy was going to hunker down and try to sneak back by me rather that go out into the road.... these mature bucks are smart... very smart.
But.... i knew what he was doing, and there was only one other trail through those briars to get past me. He knew i was there, he could smell me i know... but i waited patiently for 15 minutes and watched an opening to the other trail..... When he came into it he was literally crawling on his knees and keeping his head low..... i whistled softly at him to get him to freeze, then i took him....
Look at the size of this guy.... 300 pound black tail here.
look at the size of the back straps on this monster...