I have a three year old barred rock hen. She hasn't been eating or drinking water. When she breaths she is gasping . She wobbles when she walks only taking a few steps just to sit down again. Her comb is dark red. I've tried force feeding her and it seems to be choking her. Afterwards she gurgles. I've ordered tylan-50 to start injections. I was giving her electrolytes with vitamins, but can't get it down her without seeming to drowning her! Any suggestions?