So about 4 days ago we bought 5 new hens about 10 weeks old to add to our flock ( we already had 5 birds in the coop) and today we noticed that at least 2 of the birds that we already had have been showing signs of sickness. We have 3 copper marans, a silkie, and a mille and both of the birds showing symptoms are marans. One of them has a buggery nose, a swollen eye, and phlegm in its mouth. The other is making some really weird breathing noises that remind me of those machines that detect radiation..kinda fast clicking sounds? I've removed all three marans and have them out in the yard right now, I've been researching and found some information about a disease called MG...I'm scared that i'm about to have to lose my flock of birds...any insight or advice would be greatly appreciated. P.S. none of the new birds have shown any symptoms, only the 3 marans that we have had for 9 months.