My vet friend recommmeded me guardian Angel supplements. It’s got a bunch of vitamins and antibiotics. I put it in my budgies water and food. How often should I change the water in a day since it has antibiotic diluted in it now? I usually change the water daily, but unsure now.

I recently noticed that my female budgie has some new neon green feathers around her beak, which weren't there yesterday, and has the same colour now on her cere as well. (something looks off about her cere..) I'm not quite sure what it is but I've observed her sometimes biting off the paint...