Two of my chicks have learned to fly out of their pen

[FrostRanger]

You'll probably have to put them in the coop yourself for at least a few days, it'll take a little time to coop train them. Just be consistent and they'll get the idea eventually

 

[rosemarythyme]

They love it. It started raining pretty hard though, so hopefully the dummies figure out to go inside and huddle up.View attachment 3896673

If they haven't been trained to use the ramp (assuming that leads into the coop) they may not know how to use it. Even then, having areas they can shelter under outside is a good option to have as many birds don't want to go inside during daylight hours even if it is raining.

 

[Lord_Maren]

I had to put them in there the first night, but the next night their leader rounded them all up before I went to check on them at dark.