we had a chicken die a few weeks ago from what we thought was Canker. Then a few days ago our Welsummer began acting like her eyes were stuck shut. She was acting fine other than that and assumed her eye issues were caused by the cold temperatures. Then this morning when I went out her one eye looked like it was open but all I could see was thick yellow puss where her eye should be. I couldn't really wipe it off. Does anyone have any idea what this could be? She's acting fine other than that, besides the fact that she can't see. Her other eye doesn't have any puss but is only half open.