Hens have stopped laying.

Last weekend i moved my hen coop to a bigger coop with a lot more grass and a place where i can let them out free.
Before the move my hens had started to slow down on the laying however since the move, last sunday, i haven't had any eggs.
Do you think they will start laying again or has the move and the cold weather over come the hens this winter?
Thanks

Chicken Star

Thanks