Last week 5/25 I found 4 banties about 2 weeks old at the feed store. We brought them home and later that day had one acting lethargic and lots of clear slime in its mouth. It died the same day. I now have another acting the same way. There is no other symptoms, no coughing or runny nose. Just looks sleepy and keeps opening mouth to breath. I checked in both of their mouths when swabbing them and all you can see is the tip of their tounge not like normal where you see most of it. What could it be? Is it contagious? What incubates for a week? I have more standard chicks coming this week and was hoping to put them in with, but now I am scared to.