Comment: I second that, plus

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I second that, plus

get them outside as soon as possible. Natural air flow is better for you and them, although they need heat until their little heads are feathered up.
How do you plan to keep them? If you can, I would "chicken plow" or "pasture pen" them, so you don't have to clean a coop. If you must do a coop, I would do the kind where you throw pine sawdust or needles in and then straw, and let it compost in place for a couple months at a time, then you only have to "space suit" up a couple times a year.
Also, just for allergies in general, a tablespoon of local, raw honey a day. Throw some cinnamon on there and it is supposed to be good for arthritis, too.
Good luck!

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