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welcome to BYC!
Hello and welcome to BYC!
Once the new coop is ready, transfer everyone to it and lock them in for a week to home them to it. I would inspect them carefully for any ectoparasites and treat if you find them before transferring them to your new coop.
You are going to have to win the trust of the tree huggers. In the meantime, just keep feeding and watering them.
You will still need somewhere for the birds to spend the winter. Are you planning to build a large covered run?
Set fire to the old coop and shovel out as much of the manure as you can. Move it to another location on the property and compost it by adding lots of leaves, grass and other high carbon compostable material.
