Ok, I am new to everything goat, and am wondering how big a goat 'barn' needs to be. I plan to have two nigerian dwarf does, and alternate their breeding schedules, so the maximum total would be 2 adults (long term), 1-3 kids (short term). I would like to build one big building for both goats and chickens and have a wall divider with the chicken run on the opposite side as the goat area. I want them to have enough room to stay inside if they want in the winter, but small enough that it could stay warm. I have a separate area for supplies, milking, ect. Should I build a seperate pen for the doe and kid(s) even if there is only one other doe? Oh, and one more question: is the ventilation like a chicken coop, cross ventilation up high, and no drafts, or is there a different way to do it that is better for goats?