Well, unfortunately I did everything the expert at the Texas A & M Poultry lab told me to, exactly the way he said to do it. I had no reason to assume it was bad information. Two hens died yesterday and the vet here had me bring them and 3 live ones in. One live one is the one who last year had the eye infection and rattles very bad but pulled through though she is blind in that eye. Another was a hen who had no symptoms till today when she started the rattles. The third was one of the month old hatchlings I thought was sneezing.
They kept them all for 3 hours. They determined they likely would not get trustworthy results from testing/necropsying either of the dead hens. They said they listened with a stethoscope to the breathing of the chick (Amber) and the one eyed hen (Blue Bell is her name) and heard nothing at all wrong with their lungs. They said Amber never sneezed while they were watching. The white hen (Mrs Cheeks) was sounding bad, so we decided we would sacrifice her for the good of the rest of the flock. I had to put down a $350 deposit. They will be observing her over the weekend, doing whatever tests they feel are necessary, and then performing a necropsy and sending all the prepared samples to Texas A & M themselves. They will call me once I hit the $350 mark and let me know what else they think needs to be done and how much it will be. They had me take the other two home. I gave them a 29 page printed and emailed history of everything I could think of regarding the issues. I gave them photos, links, videos etc. I hope to finally get some answers - even if they tell me its hopeless at least then I'd know. I don't know how much more I can justify spending given our situation, so I am just going to hope that will be enough to find out what is going on.