Well I guess they're selling them as chicks in feed stores now.
LOL - it's like the black and red sexlinks, those *Cinnamon Queens*, and *Red Rangers* - they are mutt chickens that someone bred for a particular trait/s, and gave them a name in order make money off of them.
It isn't necessarily bad, it's just that there are so many chickens out there that already have the similar production traits already, that it's almost redundant that people keep making these *new* breeds up. It's why you will not find these *breeds* in the American Poultry Association's Standard of Perfection - because a lot of these new birds are simply redundancies created to make make their creators money. And some of the creators of these newer breeds will not let anyone know what birds they crossbred to make their new creation - that way they can keep people who like the birds, dependent on them to replenish their flock, rather than being able to reproduce their own flock indefinitely. Because a lot of these new mutts (aka hybrids), just can't breed true to the same appareance/production traits for very long.
It's the same thing with your vegetable seeds - people make all these new hybrid tomatoes and corn - touting them as better, tastier, more resistant to a particular disease, but if you save some seeds to plant next year, there is no guarantee that the vegetables you grow are going to come out looking or growing like the original plants did.
You just have to know what you're buying, what your expectations are, and then go from there. I was on a forum a few months ago and a poor lady couldn't figure out why her birds were very ill. Turned out she had bought a bunch of *meat mutts* from the hatchery, thinking she was going to have a flock of farm chickens that she could butcher whenever she wanted to eat chicken, and that they would perpetuate themselves and she would not have to buy new chickens every so often. The problem is that those were birds meant to be butchered no later than 16 weeks of age, and they were all experiencing organ failure because she didn't butcher them soon enough.
You just need to be aware of things when you're buying chickens.