I keep reading that sex-lins tend to be "early-layers", and good layers, but, I'm having trouble understanding why. I do understand that if the cross is RIR x Leghorn, then the resulting sex-link chick will lay brown eggs, but, "earlier" than a RIR would. So, the benefit is a brown egg, but with the early laying & regular laying benefits that are white leghorn traits. But, if the cross is RIR x Delaware (which I found out mine are), then why would I expect laying to start earlier, or be any more frequent than either a purebreed RIR or a purebred Delaware would be. I do see where the benefit is in instant sexing of sex-link chicks (cheaper for the hatchery then vent sexing, and better for the backyard chicken owner who doesn't want to raise roosters), but, i just cannot understand the logic as to why what is in effect a crossbred chicken would lay earlier, and with more frequency than either of the purebred chickens that supplied their genetics. Looking forward to any insight anyone can offer.