My white Cochin chicken started to lay small eggs when she is 4 months and 3 weeks old. She lays 3 eggs in a row and took a break for one day. But our blue Andalusion and Buckeye chickens are 7 and a half months old, still haven't lay eggs yet. Is this normal? This is the opposite of the information I read from books and Internet. Most people said Cochins are very late to mature, and blue Andalusion chickens are moderately early. Most of my other chickens are good layers. White leghorn chickens started to lay at 4 months age, cuckoo Maran started at 5 months and Orpington chicken started to lay at 6 months age. They all eat the same feed and food, doing the same activities, but they are all different. Leghorns and cockoo Maran lay almost everyday, and Orpington lays about 4-5 eggs a week. So I guess the food and the way I raise them should be fine, and maybe they just being weird?