I have 7 pullets (white PR, EE, Wyandotte, and Red Sex-linked) and a Roo that are 23 weeks and haven't laid any eggs. I also have 5 3-year old hens that aren't laying either! I know some is seasonal and molt, etc, but am very perplexed. There is no evidence that they are being eaten. Over the summer they free ranged for part of the day, until a coyote came to visit. I was also giving them a fair amount of greens and sunflower seeds. Could it be nutritional? Are they effected by having the rooster brother? Other ideas?