Even with the double layer of fencing raccoons can reach right through chicken wire. Replace that with hardware cloth or put the little coop inside the big one and add hwc to the big one too.
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Unless you have Silkies, Frizzles, or some other chicken that can't fly, your 8-week-olds can probably fly up to a roost 8 feet high or more if they want to. They should easily be able to make it up a decent ladder if they want to, even a Silkie. I don't know how high they have to go but it's a matter of training then to want to get up there, not that they can't.(they probably won't make it up the ladder to the coop)
Chicks are 8 weeks.
So I was wrong, they're staple gun staples, not poultry net.Staples won't hold, especially with those ripples where it can easily get a better hand hold on the wire.
You haven't mentioned your integration plan but the chicks are 8 weeks old - you're at the very tail end of being able to do early integration if you move them in with the adults now.
If they've been out there now for a while I'd pick a day when you have at least a half hour free, clutter up the adult run and put out a few extra feeders, and release them and see what happens. Especially since you have a known predator prowling around it'd be best to integrate ASAP.I didn't really have a plan yet. Last time I only had 2 hens so putting twice as many pullets was easy. This time seems harder and I can't monitor their interactions much during the day. At least one of the chicks was clearly wanting to be with the big hens (pacing the length of the run and watching them while cheeping pathetically).