I bought a couple of BA pullets a few weeks and I have to say they are a different pair than the rest of my flock of RIR and BR. Granted they are still cautious and learning the lay of the land but when I let them free range with the others they slink out and head off in a different direction. Much of the time I don't even see them. They just disappear. I thought the worst the first time this happened but I have since discovered the two of them like to hide under the shadowy low hanging boughs of a bushy spruce tree. I imagine they are very good at avoiding predators. They are always the last to return to the coop. Calm, shy and secretive.