Hi Kathy -
I'm SOOOOO glad you had a good hatch!!! There is something to be said for picking up eggs when at all possible!!!
There shouldn't be any cochin/silkie mixes in your group - although my birds are not separated by color right now, I've got them all separated by breed, and there hasn't been any "intermingling" going on.
This will be sorta hard to follow, but it should make sense as long as you know which chick hatched from what color egg:
You may get some "flat feathered" babies or *maybe* a frizzle or two from the silkie eggs - there are 3 hens in my silkie pen that are silkie/EE mixes (they hatched from blue eggs and were fathered by silkie roosters - these hens are the ones that laid the blue eggs), and a frizzled, barred, feather footed hen with a rose comb of unknown origin (seems to me this hen was broody when you were here, so I don't know if any of your eggs came from her or not). The rest of the hens in that pen are all pure silkies, as are the roosters.
So any chicks *with crests* that hatched from the blue eggs are 3/4 silkie and 1/4 EE - these could be silkie feathered or flat feathered. Any frizzled chicks *with crests* (or flat feathered chicks *with crests* from cream colored/tinted silkie eggs) would be 1/2 silkie and 1/2 "whatchamacallit".
HOWEVER...
Did you get any of my bantam cochin blue eggs? Those would have come from 3 hens in my cochin pen that are, for all intents and purposes, cochins - they LOOK just like cochins, but they each have a pea comb and lay blue eggs. I don't know where they came from or anything about their background, as a friend got them at an auction last year. Their chicks will be flat feathered, but they shouldn't have crests, because the roosters they are penned with are all pure cochins. One of the roosters is a frizzle tho, so you could get frizzled cochin chicks.
Keep me posted on how they do - would love to see pics as they grow!!!