I have 4 chicks that I had to put in the barn as I need the brooder space for my new chicks that will be hatching. It is usually 30 to 45 degrees in the barn coop and I put 3 ducks and 4 chicks with 2 heat lamps. They are in the same pen but divided in half for 2 pens. The chicks are shivering a little, will they be okay with the 2 heat lamps? I will be putting at least 10 more chicks and 10 more ducklings in this area but then divided into three as the older chicks will be about 45 days older and I don't want problems. The coop is covered with good ventilation. In the other section of the coop their is 12 adults chickens that I plan on combining them all this summer. Any advice would be great.