My Dominique & Orpingtons layed through the winter (as long as not in molt), and my spring-hatched Leghorn is still laying an egg a day. Tillie hasn't skipped a single day yet! For me it was only the blue & green eggers (& my Welsummer) that stop producing over the winter.My Dominiques have always been great layers. They were an April hatch, and started laying in October and continued all winter!