OK guys I need some help.... Suddenly all 15 of my chickens have stopped laying! I was getting at least a 8 - 12 a day but for the past few days not one egg! I cant figure out why.... We haven't changed their food, nothing has changed. Only thing I can think of is the weather change? But all 15??? None of them look sick in any way they are all still out roaming the yard n eating and drinking like normal. I have searched the yard and they arnt laying anywhere... PLEASE HELP!