Although I am a new member to tje forum, I have been raising chickend for about 15 years. This winter my hens just stopped laying. I have 10 hens and 3 rooster and I have a light in the coop as I have done for years. I have never had them just stop laying so suddenly. They are black australorp and buffs and they are just over 3 years old. I usually order new chicks about every 2 years, but did not last year. And I have 2 or 3 other hens but are much older, one of which is an EE and she is about 12 years old and I was still getting an egg or 2 a week from her back in the summer. Any ideas what I can do or what might be wrong.