Are these birds notorious for late start? My hens are big healthy and happy so why no eggs? They are free range so I thought perhaps they were laying somewhere else so I shut them into the enclosure with the coop where every body else lays for several days, and nothing. They do not sleep in the coop with the other hens at night but prefer to be on a roosting pole in the enclosure, could this be a reason for them not wanting to lay in there? Thanks for any thoughts.