I have a 6 year old frizzle that for about 3 days has been very quiet, subdued and is not acting normally. No other chickens are showing symptoms but she is not herself and has been "poofed" up or uncomfortable and just sitting in the corners of her shed and pen. She will drink and only eat if it's her favorite foods. She almost seems like she needs to pass something or is having trouble laying an egg (which she obviously isn't becuase she stopped her laying cycle nearly 4 years ago) but that's what she acts like. Any ideas???