Those hens that you seeing would be mature hens with their young of the year, or barren hens hanging together. Those poults that hatched early in the season are nearly as large as their mothers, and nearly impossible to determine gender as the young jakes heads are still gray like a hen, and no protruding beard yet. Birds of the year will weigh anywhere from 5+ to 8 pounds, whereas a mature hen might go more like 10-14 pounds. By next spring, those young jakes will be pushing upwards to 14 pounds.
Staying separate from the hens or hens/poults groups will be the bachelors hanging out together at this time of the year. Later as we get into full winter mode, these three groups will start to be found together. Winter roosting flocks in south central Kansas can number into the hundreds of birds.
I find that finding the birds in the fall is much more difficult if I am searching new territory. Field crops are still standing in early fall, and the CRP plots are up tall this year in Kansas. The trees are still fully leaved out so its easier for the birds to be stealthy.
Roosted birds will still make some tree helps, but the number and volume of gobbles is quite reduced. I get the feeling that one reason for fewer birds gobbling is simply due to the fact of few mature toms surviving the 2 months of spring season hunting.
If you are seeing the hen/poult groups, I would suggest you try the tried and true tactic for hunting these birds.......the bust em up and call em back move. Sneak in close, and then intentionally bust the flock. Some hunters will even fire a shot into the air to startle the flock. The more points of the compass the scatter, the better. Then settle in to act the Mommy hen calling her poults back, and the kee kees of the scattered poults will start to get closer and closer to you. Throw out some " kee kees " of your own and even if you choose to not shoot, you will have a great day afield interacting with these crazy stupid and crazy smart tasty treats.