I have a sick chick. She is only approx 11 weeks old. She has a huge golf ball sized lump on her throat and is not eating, drinking or really moving for that matter. She tries making sounds but the sound barley comes out. I had another just dead in with them a few days ago. There were 7 total. I'm not down to the other 5 plus her. I've had them for weeks and just recently moved them outside. They are also on medicated feed and have been treated approx two weeks ago for possible parasites with imovec. Any thoughts or suggestions?