Hmmm, not sure. I think I see feather legs? Could be any number of breeds. Where did you get it? Do you know what types of chickens were where this chick came from?
I'm not an expert, especially on younger chicks, but I'd say pullet right now.
If it's a purebred bird could be a cochin, brahma, langshan, etc....
I'm sure someone will be along who can tell you better.