Most look to be 1 to 2 years old. Some of them have the genetic defects that keep them from being true maran like the white earlobes and white beak end. I just got them for free from a guy who had a lot of hens and let them free range and they seem healthy but are thin and have been eating the food and water constantly since I got them two days ago. They have all been sneezing though which I thought was weird. He did not know whether they were laying or not. Do you think they will lay this winter or at all now that they are older? One of the hen vents looked like it was still fertile but there was a yellow color around the vent.. could this be a disease I'm feeding them probiotics which I hope will help and they don't look like they are moulting so I am not sure what to think about these hens I just got. They eat A LOT of the all flock nutrena feed I have and are very curious, but they are terrified of humans.. Since I don't know any history about them, a first time hen owner, and its getting to be wintertime now, I'm nervous.