Good morning, I have a new flock and the last couple days I lost one hen to a rapid illness. Two other of my girls have runny nose along with watery eyes. The one that died did not show these symptoms. She became lethargic and rapidly went downhill. Not all are laying yet so I didn't want to take chances on anything spreading so I'm treating all with antibiotic, probiotics and electrolytes for 10 days. Today will be day 2 on medicine. I'd rather lose eggs than any more hens. Besides that they are acting normal, energy and eating and drinking. Any further advise would be appreciated. Thanks!