my 1.5 yr old red star has theses symptoms: lethargic, poopy butt, pale comb with a few dark patches at the top, not eating or drinking. her vent area looks fine- no sign of lice or mites. we have kept her in the garage under a 100 watt bulb for the past 2 days and she has not eaten or drank as far as we know. the last time she ate was on saturday morning- a banana. we put a worm medicine in the water, but don't think she is drinking it. does anybody have any ideas of what this might be? she has always been happy and healthy and her sister is still fine. please help!