Ok,I called UC Davis SB and they said they didn't get any animals from the vet. So, I called the vet back. They put me on hold for 15 minutes and came back and said the vet did have results and would be calling me. Ok, maybe they didn't send it under the office name.
I'll give them credit, they called about 10 minutes later. I probably should have asked him to forward the email. He said there was some pus material in the yolk sac, but it said that most likely wasn't the cause of death and that it didn't look like it would spread to others in the flock.
He said he got that email today. (I don't believe that). He said he will call when he gets more info.
What would cause puss in the yolk sac?