bueller, I've wondered the same thing.
The picture below is of 2 bucks, 2 does, and 2 fawns. The deer in the back on the right is a buck, but you can't see his antlers. The pic was taken August 24 of this year. It's not the first time I've seen bucks and does and fawns hanging out.
I've seen one bachelor group in my life. That was about this time last year, about 10 miles from our place. There were 3 bucks together on the edge of a cornfield. Basket-racked 1 year olds.
A friend of mine lives and hunts in an adjoining county. This year he and his buddies have been watching a bachelor
group of 12 bucks, some of whom are pretty impressive. He said 12 is more than normal for their place, but 6 or so is pretty common.
Could it just be because there are more deer in his area, and that deer prefer to be in groups of a certain size, i.e. strength in numbers?
I wonder if there is an optimal number that deer prefer to live and travel in...?