My girls are 19 wks old, combs and waddles coming in nicely but no eggs. Should I worry? There's plenty of fresh water and oyster shells in the feed. I know they slow down j. The heat but I've not gotten one egg yet. And recently the girls have learned to "jump" their fence and are wandering the yard. Not going anywhere and always come back but it makes me nervous that a predator could get them outside the fenced run area. Am planning to build the fence taller.