Red sexlinks would be a Hybrid.Same for Production red,(Mentioned it is bred with 3 different breeds.)
Red Sex Links are definitely a hybrid. They are produced by crossing a red gene rooster with a silver gene hen and two Red Sex Links will not breed true. Whether or not Production Reds are hybrids is debatable, depending on who is defining a hybrid and how they define it. Both parents of a Production Red are red gene chickens, and as a result, Production Reds will breed true and produce red gene offspring. While clearly not a breed sanctioned by any of the poultry governing bodies, some Production Red breeders such as Purely Poultry (https://www.purelypoultry.com/blog/...tween-production-reds-and-sex-linked-hybrids/) do refer to Production Reds as a true breed instead of a hybrid. Clearly this is just Purely Poultry's (and others) opinions as there is no real standard for Production Reds. As Chris09 said, there will always be disagreement on these birds.