I have a two year old lavender orpington who has done the same thing. She usually lays an egg a day or other day. She had a hard molt this past fall and quit laying altogether. Has not laid an egg since. She is in coop/run with 8 other hens and 2 silkie roosters. The run itself is 24 x 13. They were wormed this spring and treated proactively for mites. I have also treated them for coccidia sev months ago since one stool looked suspicious. Her comb has remained bright pink. She shows no indication of even trying. She doesnt go into the nest boxes at all. Even the other big marans rooster I had was not interested in her. She was the only hen that had all her back feathers! Otherwise she is fine, eats, drinks, socializes, no problems.
