it is possible that the chick pipped into a vein and bled out. It happens, nothing you did if it was a vein pip.
My question for the night:
How long do I need to feed the turkey poults the higher protein turkey food? Or in other words, how soon can I put my turkeys in with my chickens if ever?
Kab, just wait it out and see. Chicks will rest a lot before pips.
Sally, can they see each other now? There is some risk, but I do keep and raise them together. Blackhead isn't real common, in my county. You can call the county extension and ask if it is where you are at. My turkey hens are typically more aggressive to chicken roosters and will not tolerate them much! Poults are slower to mature. An outgoing chicken breed ,may actually intimidate them. You could do a trial run, and monitor how they act. I just added 4 poults to my egg coop tonight, and it went pretty well.