I have only gotten two eggs which were fertile thank goodness ,from one of my btw Japanese the hen that layed them is dead but my 3 others are not laying at all the only hen that's laying out of 6 is my partridge rock hen who has layed 1 egg a day since decmber. the Japanese hens are running from the roo, the hens are only about a year old. I have them on laying pellets mixed with hen scratch but idk if I'm doing something wrong or if I can do anything to fix this issue.