I have a 6 month old ee hen who has been sick for five days now. Found her Thursday am in the coop in the roost bars but not moving much. I thought maybe she was getting ready to lay her first egg but she got worse so I brought her in as it's very cold out. She's not eating or drinking. I've been hand feeding her water and a tiny bit of soaked feed. I tried Corid but there has been no blood in the droppings. Her droppings are white, with some yellow and green. No worms that I can see. She's getting worse so I decided to try Tylan oral today. Got her to drink some out of a blunt syringe. She's not showing any signs of a respiratory problem. Just quietly fading away. I've had chickens for many years and this is a new one for me. Don't know if I should give the rest of the flock Tylan, just in case. Please help. Trying to figure out what to do for Red (she's separated) and for the rest of the flock. Thank you!