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Fluffy Butt's is a friendly and good thread for ideas. One member is collecting wood to create another space for their chickensHello
I wish you every success with your chickens. But as already said finding a secure outside location would be in both yours and their best interests
Maybe an allotment nearby if you don't have an enclosed garden.
With good wiring surrounding a hutch full of straw and perches for them to roost with maybe a ladder of some sort would be good.
There are many threads here that could give you directions on accomplishing what is needed. Plus I think there is a Pensylvania thread to
.https://www.backyardchickens.com/threads/fluffy-butt-acres-stories-of-our-flock.1286630/page-21689#post-28431157