My hubby got us 4 chicks for Christmas and we have never had chickens before so I am feeling kind of lost. I wanna make sure the are safe and happy. Every website I look at always seems to refer to BYC so i figure this is the best place to get some answers. First off, we built a brooder for the chicks and I am not sure if it is warm enough. It is about 55 degrees outside mid day and drops about 15 degrees at night. the brooder is a 24" by 36" wood box and it has one 75 watt bulb in it. The chicks are about 2 weeks old. Is this warm enough? I dont have a thermometer.