I've read a lot about integrating young pullets into an existing flock of older birds, but I have a question about doing the opposite. I need to integrate three new birds that are 9 months to a year of age into my existing small flock of 13 young 4 week old pullets and one cockeral. I know to quarantine the birds for one month on a separate part of the property where the birds will not be able to share airspace. During this time, I plan to deworm using Valbazen, mix in medicated feed to the layer ration to hopefully build some immunity to cocci, which I have dealt with already so I know it's in my coop, and treat for mites just to be safe. My question is, what would be the best way to integrate these three older birds (purebred Ameraucanas) into my small and young mixed flock (consisting of light brahmas, andalusians, easter eggers, and cuckoo marans) at the end of the one month quarantine period?