I have only been selecting chicks based upon the eyeliner as I find it to more reliable than the chipmunk stripe which appears on both male and female but can be hard to see on chicks with gray down. The disruption of the eyeliner is 100% accurate on my line. For me, the ability to sex within an hour or so (when dry) of hatch is the single most important aspect of CLs. Sure the blue egg is nice. But 90% of my customers live in cities. So they appreciate the fact that my CLs I am selling them are absolutely hens.Seems to me that since the eyeliner is kind of 'ours' and isn't mentioned by Punnett as I recall-- I would definitely not select for it-- although it is a help since many, many female chicks do have it.
Thanks dretd--for the reference and link...but I'm thinking I saw something a bit different from another writing of Punnett's. i will have to dig a little - the gist is the same.
to everyone-- does it seem that the male stripes on the back are becoming not just diffused buy quite absent in some strains and in some male chick pictures?