Just ran across an ad for BLRW Banty's, white Japanese black tailed Banty's silkie cross' and Golden and Silver Sebrights... I am interested in just about all these breeds. My broody hen has 4 babies, could I add to her little flock of babies? Are any of these sexable at 2 weeks? What is your experience with them? Are they friendly, broody, good layers, good free range or should they be cooped?