healthcare

So i notice a week a before Christmas my IRN was coughing and had nostril discharge it was maybe a few times a day he would cough tho I took him to see his avian vet and they recommend 10 days neblizling twice a day with gentamicin after the 10 days he was okay for a week or so then began...

So, Pikachu is going on and off of random symptoms. He was pooping lots, the colour of the poop changed, he got very aggressive, and the poop had a bad smell. Most people suggested a bacterial crop infection, so when I told my dad what was happening, he said that we'll talk about it, BUT then...

I know it's a crappy picture but it's the best I could do. Loki, my 10 month old Jardine's Parrot has always had a flakey beak, but it seems to be getting worse rather than better. Is the state of his beak cause for concern? What can I do to help him? Any help is much appreciated, as I really do...