Hens gorn orf.

How easily are hens put off their laying? We moved ours to new accommodation a couple of weeks ago and the egg production has dropped off quite a bit from 7 ish to 5 ish average (three one day from 9 layers  ). And we actually had a full clutch of 9 a couple of days before they moved.

They have gone from two coops (1 medium and one tiny) to one nice shed with perches for all. They have also gone from laying in only one nest box (through choice not compulsion) to having three rather roomy ones.

OH, being a bright soul, wonders if the nest boxes are too open? they are inside the shed but have one side open about 12"x18". Their old nest box they had to squeeze into although it was big enough inside. Should we put up shields to make the entrances more restricted and the nests therefore more secluded?

Sorry for long winded posting 

They can be put off very easily, it may just take them two or three weeks to get back into the swing of things. The first time we left ours in the care of our son for a couple of days they laid ok for him but as soon as we got back they went on strike for two weeks (I did wonder if it was worth ever having another two day break after that!!). I was so worried I posted a message on here regarding it for advice aswell!! Seems it's pretty normal