okay so I apologize in advance if this is a question that has been asked to death BUT...I am stumped as to why my chickens (6 hens) have all stopped laying suddenly. No eggs for several days. they are not sick, they are not moulting. yes it's a bit colder and we have a couple hours less daylight..but all stopping at once? I have been getting 5 or 6 eggs a day like clockwork since they matured. They are only about 7 months old. If they had a fright how long does it take them to get back on track? I'm thinking maybe a predator is lurking at night? or maybe the odd firecracker going off in the distance (Halloween last week) would these things interfere with egg laying?