I have a BR that is almost 1 yr old. She has been laying regularly since Feb. or Mar. All my chickens free range. This last week I have not found any eggs from her. She is my only standard size hen so it is easy to find her eggs. Should I be worried? I realize that she could be laying somewhere in the yard and I can't find them, but she has always had a few favorite spots and no eggs to be found. When a hen becomes an internal layer how long do they go without laying an egg before symptoms develop? She acts perfectly fine, no signs that anything might be wrong, I just want to know...just in case. When do chickens usually have their first molt and how long does it take? They don't lay during molt do they?