My 1.5 year old Buff hasn't layed an egg in over 2 weeks. She has never been a consistent layer, but her normal pattern is every 4 days. She doesn't look like she's molting or sick. I have no idea other than she's really fighting with the rooster lately. She fights him every time she sees him mount one of the other hens. She has ripped all of his neck feathers out in their fights. Could this be causing her delay?
If she's 18 months old sounds like it's time for her molt. Some chickens molt slowly, making it harder to determine that they are indeed molting, others seem to drop their feathers overnight and get it over with. At 18 months old that would be my first guess.
