You're welcome. Isa Browns and Red/Golden Stars are essentially the same bird. They are a few of many labels under which some hatcheries market their Red Sex Links which are produced by crossing red gene roosters with silver gene hens and they are egg laying machines. Black Star is one of a few labels under which some hatcheries market their Black Sex Links which are produced by crossing red gene roosters with barred hens. These Sex Links (for brown eggs) and White Leghorns (for white eggs) are the best layers in the chicken world which is the reason that these are the hens used by the laying houses.
