For those who free-range, do you guys let them out on yucky days, or just leave them in for the day? What if the yuck goes on for a week? We had a cold snap that lasted a week and I left everyone in the whole time. The run turned to yuck (11 ducklings, 7 cornish x and four chickens in the same pen for a week straight). It's raining now, and I feel bad that everyone's stuck in the pen, but I certainly don't think that they'll be much better hiding under our cars. Any input?