My hen is about 4-6 years old and recently she has gotten increasingly disheveled and lethargic. This has been going on for about 3 days, her main symptoms are as follows --- Lethargy, muscle weakness, falling over, pale. I performed a vent exam and didn't find an egg stuck in her, I also took her temperature (105.1). I am very worried for her, she is eating (not sure about drinking) but obviously not feeling well.