This beauty strayed up at my house 2 years ago and was really wild. I bought chicks (supposedly hens) back in June. He has gotten alot tamer and has been coming closer to me since then and just in the last 2-3 weeks I have noticed his hackles turning darker and they look thinner. I am still learning about chickens and have no idea why he's changing colors like that? Is it due to winter coming,aging,or what?