My new baby chickens were doing great until this morning. They are 5 weeks old and they have been spending time outside with our California warm days and coming in at night. Sadly this morning I found one of them had died sometime between 11 pm last night and 7 am this morning. It was warm out here yesterday so I had turned off their heat lamp for the night. The temperature was probably about 70 degrees in the cardboard box where I had the group of three. Her neck looked very bent backwards. Could it be that the other two chickens "cuddled" with her too much and her neck got broken?