Not sure age - Can these guys go in my coop now?

[Danismex]

I am not sure how old these ladies are... maybe 5-6 weeks. Do they look like they are feathered enough to go into my big coop? They will be still be contained in this net pen until a little bigger before being released with my fully grow ladies, but they would be with them getting used to each other.
There will be no heater like the one in this picture. I am going to use it now for my other chicks

 

[nuthatched]

Yep.

 

[K0k0shka]

Yes, they are fully feathered and it's not very cold anymore.