Hi, hope you are enjoying BYC!
Those are cute babies!
My bantams lived just fine in my LF flock even around 60+ birds or so for a couple years.
However... once the rooster was added in, I chose to separate my bantams as the rooster does breed ALL the ladies and I wanted to prevent
accidental injury. Some people have gentle roosters that mate their bantams fine, just standing behind them and not even mounting. Even though my boy is "pretty good", he does get over excited sometimes and I'm not willing to risk it.
One of my production red gals (always the pullets that are trouble makers) decided she would also mount my subordinate bantam girls.

I WON'T have a hen balding another hen when I work hard to prevent over mating by my stags.
Each flock dynamics will be different. You can try and if it doesn't work out, switch it up.

You've got a little while to decide how you feel about it.
I can't tell if those are fluffy cheeks or just standard chick fluff on your suspected Welsumer. Easter eggers also have the chipmunk stripe.
