Wight and in particular fleshiness are good indicators of the hen’s condition.
You can’t see uniformity but you can measure it by weighing birds individually.
The less the difference there is between the birds, the easier it is to look after the flock properly.
Each bird should really be looked after differently depending on its development. But by ensuring that all birds develop as uniformly as possible, you can treat them more or less as one bird.
Uniformity is criterion for the quality of your management. It other words, whether you are managing to provide each bird the same amount of feed.
Check the fleshiness of all your birds.
Check the animals and the feed at various locations in the poultry house.
Check that there is enough good quality feed ever where.
Weigh the birds regularly to determine how their weight is developing.