Yesterday evening I noticed that my sulpher crested cockatoo, Beaker, hadn't eaten any food during the day. When I first fed her in the morning, I did notice that she'd eaten the food I'd left in her cage overnight, so I didn't have any cause for concern until yesterday evening. At that point I offered her several of her favorites, and she had no interest - which is really unusual. She even ignored a piece of cheese, which she loves. I finally enticed her to eat some graham cracker, but within 5-10 minutes she vomited it back up. It didn't have a smell, other than graham cracker. The same happened again this morning, so we rushed her off to a vet who has avian experience. She examined her and said that she looks very good, clear lungs, nice feathers, in good body condition... She advised that we start with a chem panel and a fecal; results will possibly be in tomorrow afternoon, but possibly not until Monday. She gave her subcutaneous fluids, and sent me home with baytril, nystatin, and benebac, but advised me not to use them until I either hear from her, or unless Beaker gets much sicker. I don't really know how to define "much sicker" though - she already is vomiting and has little interest in food or drink. I've had Beaker for 28 years, she eats a pretty healthy diet - veggies, TOPS and Golden Obles, has lived in the same cage the entire time I've had her, and hasn't been exposed to any other birds or animals. I'm hoping someone hear can advise me about what else I should ask for, or do. What other tests should I ask for? Does this sound familiar to anyone?