So I had my first 2 cases of pasty butt. Both of the cuckoo Marans. All 9 of the other chicks are fine. I feel bad as I didn't notice it yesterday but when I checked this morning it was really caked on there.. It was incredibly difficult to remove. I dipped their butts in warm water and got most of it off, not all but most.
I went and bought yogurt and raw acv. Holy cow does that acv smell horrible!! I mixed it with their water. I also made a mixture of yogurt and crumbles. They haven't tried it yet but I assume they will eventually.
I also bought a smaller feeder tray to make some mash out of the crumbles. I am hoping they don't waste as much and maybe it will help with the pasty butt too.