Quote: For more information in post #1
There are several sex-linked hybrid types, but these two are the most common.
Red Sex-Links
What is known as the "silver trait" is found in hens of many but not all white-feathered varieties or breeds and some with silver lacing. When crossed with a male without that trait, the male chicks will be white and the female chicks will be the color of the rooster. Rhode Island Reds and New Hampshires, being very productive breeds, are the males most often used. For the silver-factor in the mother, several different breeds and varieties have been experimented with. Among those used commercially have been Rhode Island Whites, White Plymouth Rocks, Delawares, and Silver-Laced Wyandottes. I believe that Golden Comets are produced by crossing a White Plymouth Rock females with a New Hampshire male. In addition to Golden Comets, among the red sex-linked chickens that are most widely available from hatcheries are Red Stars, Cherry Eggers, Cinnamon Queens, Golden Buffs and others such as ISA Browns.
Males hatch out white and, depending on the cross, feather out to pure white or with some black feathering.
Females hatch out buff or red also depending on cross, and they feather out in one of three ways.
Buff with white or tinted undercolor (such as Golden Comet, Rhode Island Red x Rhode Island White)
Red with White or tinted undercolor (Cinnamon Queen)
Red with Red undercolor (Delaware x Production Red) (In this color pattern it is almost impossible to distinguish daughters' color from father's color.)
Black Sex-Links
Black Sex-Links are bred by crossing females that carry a sex-linked barring trait with males do not carry the sex-linked barring trait. Unlike the Red Sex-Links, there is a more subtle difference between the sexes at hatching. Both are mostly black, but males will have a white spot on the head. Rhode Island Reds and New Hampshires males are the most commonly used since they are productive breeds that possess the non-barring trait. Barred Plymouth Rocks are by far the most commonly used females, but any variety with barred or cuckoo feather patterns could also be used. Commercial strains of black sex-links include Black Sex-Links, Black Stars, Rock Reds, etc. What works for the industrial giants, may not work if you try to do your own cross breeding -- or at least not as well as you might hope. Also consider, the commercial strains have been developed using decades of selective breeding for highly productive hens, and the breeding occurs under very highly controlled conditions, so your attempts may not produce the same results.