Autumn rutting (deer mating) season is full of passions, competition, and exhaustion.
First we see stags stampling hinds urine. They'd come right up to the peeing hind, or to the spot where they've just observed she'd peed, and have a taste of urine. They'd then stand for a few seconds with an open mouth.
Then come the fights between the stags.
But just as in "Highlander" - there can be only one. One winner takes it all. Well, almost. The outsider stags might get lucky in the very end, when the dominant buck is too worn out to keep chasing competitors away.
When the winning (sire) stag emerges, he starts 'patrolliong' his territory and roaring
You can observe that in the following videos:
But don't worry, the big boy is going to be just fine in a couple of days after he starts eating again.
This is also the time when wild stags from around the area become sex-crazed enough to force their way into the farm, hoping to get a chance to mate with the numerous hinds roaming around. Unfortunately for them, all they're bound to become is dinner, as we have to protect our breeding stag. He'd have no chance against the intruder with full blown antlers.
Currently, the big buck is happily eating again, not roaring but when smaller stags see him they still run away or at least retreat a few meters.