Oh really? I'm just going on what YOU told me yourself. You openly admitted that you neglected your bird for weeks. Things happen in life, and I understand that. However, a couple of weeks ago you were saying that you had "mental issues" and that you were busy "sorting out" your life and as a result, you had not been able to spend any time with your bird for weeks, moved its cage away from you because it began screeching etc. You even punished it! Your bird was/is suffering.
I don't intent to be overly harsh here and you know I tried to help you with your bird, but I find it difficult to believe that you have managed to sort out your life, overcome your "mental issues," and stop your bird's screaming behaviour in only a couple of weeks. With the new ferrets, time is even less available for you to spend with your existing animals, and I know of at least one that is in desperate need of it.
You "damn well" know that they are a long-term commitment? You were considering selling your bird because it was screaming for your attention. You then ignored it and moved its cage away.
I just don't think you need any more on your plate until you're sorted to be honest. Again, I do not mean to be hurtful or rude, but I don't like when people take on animals but only provide proper care when it suits them. You're quite young, and you seem impulsive. I just hope your animals don't suffer any further.