I just discovered this. I am in the process of getting some standard size Welsummer hatching eggs. I made an image search for the Welsummer and found out that there are also not only the standard chicken but also the bantam as well. Is your hen small like a bantam? Just curious because I can't tell from the picture if she is a bantam or a standard size. I have three bantam hens and for a very long time I could not figure out what kind of hens I had bought. Now I know. I have Welsummer hens. I'll also be getting the standard size soon. My little hens, as what I have been calling them, are the sweetest little hens in my flock. They make beautiful sweet little sounds when they forage around the yard. I love them.
If they are bantam, they could also be Old English Game Hens. My avatar picture is of my Old English bantam hen...