Thanks everyone. Sadly, when I checked this morning, the serama, Mille fleur, and black NN roo Herman (the black NN chick that was my avatar for ages "fabulous") had all passed overnight. I'm not sure how to go about necropsies..where would you have those done? I'd love to if I could to make sure it's nothing that will harm the others.
Thanks, Brian. I'll get back to you on that rock. I'm kind of afraid to bring new birds in now until I figure out what happened, not because they'll get mine sick, but incase mine get new ones sick.
I'm honestly not sure what's in the feed. I'm pretty clueless about feed still. I don't have it mixed myself yet, just buy the complete poultry crumble from the feed store. There are no noticeable pea or sunflower seeds in it?
Still going to try to talk DH into going to the nationals Saturday (though I probably won't bring $$ since we just "sold" a junk car to a guy with a bad check and we'll have to get that straightened out). If I manage to make it, I'll definitely keep an eye out for you, blessedchick! Though you might need a name tag.