Hello!
Im still pretty new here

I just acquired a cockatoo from work and I was her primary for many years then for the last year she went to someone else. She has been with me for 1 month and 2things I've been struggling to get her to do. One is eating her food. She is very fussy and doesnt want to eat pellets or vegetables. I've tried holding off, tried in enrichment, also a huge variety of chop mix etc.
Secondly she has developed this behaviour (I saw it happen at work) where she flies at peoples heads, lands on them and tries to bite.
I would love some advice to break down my priorities on how to train her out of this.
NOTE; Due to her being fussy she is sitting a bit lower in weight and she also does not display these unwanted behaviours to me.
Thanks in advance!