I am picking up a trio of year-old guineas tomorrow morning. I've been told guineas have a tendency to fly away especially when they weren't raised on your property- what can I do to keep them from flying off? (I don't have a big coop to keep them in. We're working on putting a ceiling on a horse stall but for now all I have is a giant breed size wire dog crate) How soon can I let them free range? We are getting eaten up by ticks and these birds could feast!