I have 6 2.5 week old ducks that are totally stinking up my spare bedroom and outgrowing their box. My husband and I built a nice big coop for them with a fenced yard and pool that drains. We ARE putting them in the coop tomorrow but how warm does it need to be before we let them loose in the yard and pool? It's only supposed to be in the high 60's low 70's tomorrow. We haven't been keeping a heat lamp on them for the past week because we also have chicks in that room and they are plenty warm enough with the heat of the room from the chicks lamp. We def plan on putting the heat lamp in the coop for a bit -esp. at night. ANY info would be greatly appreciated--I'm stressing the move just a little bit.