I have an Olive egger, sultan, amauracana, and orphington all not laying. They have access to oyster shell eating bugs, supervise free range so I know they are not laying outside. They are on a mixture of grower and layer. Fake eggs in the box. They are not squatting, some are red but not as red as my 4 year older girls. My first two flocks layed around 19,20 weeks and were later in the year. I don't know what is different. I'm doing everything the same. I don't expect the sultan to lay anytime soon but the rest I thought would be laying. Any ideas to speed thing up?