Hi, I have had a couple of chickens die on me and one got very close, just standing still, eyes closed no interest in feeding or joining the others. I went to pick up a second hand guinea pig cage to put her in, but I had put her in my laundry with no improvement. The lady I got the cage from...
Mine started at about 30 weeks. At least they stop laying at a later age as well. I have 10 chooks, only 3 of them wyandottes and I can say they probably lay every other day as I get up to 9 a day, usually 7 or 8.