My husband is winterizing our insulated coop (we are in SE New Hampshire), and he wants to put some insulation up along the ridge vent. He says the coop is far from airtight but since we only have 10 birds in a 12x12 coop, he wants to make sure whatever heat is created stays in as much as possible. We've put a humidistat and thermometer in the coop to keep on eye on things, so I'm wondering what percentage of humidity is "good" versus "bad"? I think in houses, anything over 50% is "bad" but I could be wrong about this, so if anyone has ideas for coop levels, I'd be happy to hear them. Thanks!!!!