No reason to raise them then.
It's not the norm, but if it's been working no need to change it.
HA!
Like when folks come to complain about 'no eggs', and their birds lay the next day.
Ehhh.....it's not bad for 8 birds, a bit smaller than I'd want for integration.
Is the feed and water taking up some of that space?
So how are the roosts set up.
It's always helpful to have a separate roost for the newbies.
How big is the coop/house, in feet by feet(or meters by meters).
How many birds total?
Dimensions and pics(inside and out) would help here.
Might be time for an exam:
https://www.backyardchickens.com/articles/who-is-laying-and-who-is-not-butt-check.73309/
Then.....
Free range birds sometimes...