Hi lads have had a red eye diamorphic paired with my pea throat since early January. Yesterday I noticed she didn't look the best goin soft . So I brought her in house in hopper/hospital cage and I gave her vitamins some baycox greens and egg food cuttle fish grit .she's picking out the little oats in canary mix think that's the name. Very lethargic. She was in super condition when I bought her she's only a 14 bird . Could a change in diet cause this as I have made up my own two suit both finch an canary . Lost them before just have an eye for this one . Any advice very and help much appreciat