My mom's 1 year old cockatiel suddenly stopped eating yesterday and has been very lethargic. She is barely moving, just enough to stand and stay in one spot. This is very unlike her as she follows my mom around the house and can even be aggressive at times (so her sudden acceptance of being held is very strange). No major changes lately-her diet has not changed and the weather here in San Diego has been warm as it normally is. We read that giving her a few drops of Pedialite may help so we did that with little change. We plan on taking her to the vet tomorrow, but anyone with advice or experience would be very helpful. Thanks everyone.