I have 6 hens and get anywhere 5 to 6 eggs a day. Sunday and yesterday that dropped to 4 and today I had three eggs. I kept them locked in their coop most of the day Saturday while rebuilding their run (putting a better cover over it). There was a lot of hammering on the coop, digging, sawing etc. Would that have stressed them to drop egg production? Also we have had a quick drop in temps. Would that sudden temp change alter egg production? Hens are about 8 months old.