Red sexlink or red star

[hvacman]

What are the major ddifference between these two breeds or are they the same?

 

[Ridgerunner]

No real difference. Red sex links just describe the method used to sex newly hatched chicks. Red Stars is just a marketing name some hatcheries or people use to sell them.

They are not “breeds”. They are crosses set up genetically so that they can be sexed by down color at hatch. Many different breeds could be used to make them.