So we just put a heat lamp into our small chicken coop to keep up egg production. The coop is a very small one (it says it can have up to 4 chickens, but we only have 3) and my birds are brahmas and 1 salmon faverolle. Will they get too hot? Also, when will the production start up again? Do we need to close them in so they think it's daytime or do they just need the light? Thank ya!