I am wondering what exactly are safe temperatures for chickens. I live along the coast in Central California and the temperatures are about 50degrees at night in the summer and high 40's at night in the winter. I have never had frost on my lawn or roof in the 7 years I have lived here. Many people here say to add a heater or light when it get "cold". My version of cold is probably a lot different than what someone from the midwest would call "cold". Just looking for actual temperatures. I put a thermometer in the coupe last night and it read 52degrees. Sorry if this has already been answered, I searched but couldn't find it. I would like to know. I also have a local feed store that has 5 week old chicks that they have in cages outside, with no heater. They say they are ready for the coop. That seems to go against the advice I have read here. Isn't that too young for the coop? Please advise, thanks!