a few days ago we noticed one of our 6 hens having a hard time breathing, not acting herself, and making a sound that made me think she had something in her throat. So we gave them antibiotics in the water hoping that'd help. Didn't help much, and now 3 have the illness. Two have swollen spots on their face and wattles with some fluid in it. I am very concerned that I'm gonna lose my flock to this, it's making me sick to my stomache I feel so helpless...I got Vet Rx from Amazon that a friend recommended to try out. Just gave them all it to see what happens. Just feel so bad to see this spreading to all of them, we raise them as pets mostly so it's not like we want to just cull them Any advice?