I think you are trying to deal with too many things between the birdies. Relax. Having two different species can be a challenge because they each demand different attentions and act differently in certain ways.
What you have written about them so far has been very informative. Mango is a baby, for sure. He will act accordingly. Kiwi is a female that is active hormonal. Two distinct birdies, alright.
I think once Mango gets a few months older, he will turn out really nice for you.
Reality for you is normal. Read my e-mail I sent you tonight.