I am looking to buy some black copper marans from a local lady. When I called she said they had lice and worms but for $50 more she would medicate them. I have 25 chickens and ducks at my farm and I'm worried about bringing lice and worms in. If these chickens have already gotten in multiple times, should I expect this to be a recurring problem once they've moved? I would keep them quarantined from my flock for a couple of weeks. Not sure what to do! Really want the black copper marans, but don't know if I should risk it? thanks!