I have never had sick chickens in 3 years, so I am a noob. I have some 4 month old pullets. 2 days ago I was checking my flock as always do in the dusk just before bed. I saw one of the young one sitting by itself. I pick it up and see yellow snot in the nose and 1 eye is closed. It was breathing heavy too sounded like a coffee pot. I took her inside in a sick cage. I gave her fresh water with the yellow powder mixed with it. An antibotic off the shelf I've use for new shipped chicks. She seems to be getting a little better but still has 1 eye closed and nose is clogged. Tonight I found another pullet same age same hatch mate sick same thing going on. I put it in with the other chicken. I have had them since day 1 and they free range in the day get locked up at night. What is my next step? Do I buy a lot of the yellow stuff and water all my chickens? Do I call up a local guy i know to give them a shot of antibotic? I don't want to lose them. Only the BCM are getting sick. The EE's I hatched are the same age. I did see a mite on one of my hens vent this week. I planned this weekend to dust and de-worm the flock. That is always fun! But if I have sick birds I don't want to make it worse. Any guess as to what I'm fighting and what to use to get rid of it. I see a scrub down of the coop with bleach coming up soon.