I have 5 Buff Orpington chickens that are 10 weeks old. I have always noticed that one of my girls legs are a bright yellow orange and the rest of the chickens are the pink/white the Buff orpingtons are supposed to have. Here is a picture of her. She is a very sweet girl and looks like all the other chickens except for her legs. Just wondering if she was really a Buff orpington or maybe a Buff Plymouth Rock. Either way we still love her.