40 years ago, tried raising laying hens. Ordered chicks by mail and only a few didn't make it. Built a 8'x8' coop with roost and nesting boxes. No problems til winter and the temperatures dropped.
Put a small milk-house heater in a wire basket to protect the chickens. Worked great until the first electric bill. Over $400. Raised holy h+ll with the Power company...and found out I was wrong. Took out heater and put in a heated waterer. Much cheaper to operate. Also insulated the coop and allowed the chicken poop to build up(generates an amazing amount of heat). Also, added a shielded light bulb on a timer to keep those gals laying.
Life got busy, feed and straw prices increased and I gave up on those fresh eggs. The sadness still lingers and I haven't had a decent store bought egg yet.:chicken: