I am having the same problem with the weirdest chickens I can ever remember. Hatched last March 27th. Laid well from Mid August- Thanksgiving & then about 6 molted at 8 months & quit. They never really rebounded after that. In May a BA went broody then another & then the first one went broody again. She is just giving up now. Egg production has been 4-8 a day all summer from 13 hens. I have 4 EEs & haven't gotten a green egg since last Tuesday. Two still have red combs. They didn't even make a year of laying, but I think they may have started molting, but am not really seeing loose feathers yet. Never had this happen in 25 years, but this whole year the weather has been lousy. I get enough eggs for myself & the few people I give them to. I had contemplated keeping them longer than 2 years, but may rethink that now, although I hope the BA goes broody again next spring so she can hatch some eggs. Good luck!