I have 10 classic frills. A few days ago I found one of my young males (he is about a year old almost 2) in front of his water bowl spitting up a clear liquid (I'm assuming water). My dad told me it was probably that he drank too much water. So I took away his water because every time he drank he'd get worse. This made him better so I put back the water. The next day he looked better and he spit a little when I held him. But other than that he could fly and looked fine. But yesterday I found him weak and spitting up the water again. This time he couldn't fly and looked bad. I immediately separated him and I noticed that he eats but only the smallest seeds. I've been searching the internet in hope of finding how I could help him. I found that it is useful to put apple cider vinegar in their water, so I added some. His poop is loose but green. There are no avian vet clinics around my house and the one that is, is very far and expensive. Please if you have seen anything similar please help me.