(sorry about the delete... obvious spelling errors)
I sincerely hope this works out with the M2.... the aggressive behaviour needs to be corrected immediately... (the chasing and biting feet/ankles) ... yelling/screaming or other punishment won't alter that, help to reward good behaviour applies to them when they show unacceptable traits....
There is a group that can help with those issues...
At six years old the chances are Lola has reached maturity usually between six and eight.
With any cockatoo after the second full moult it is quite obvious as to the sex, mostly due to eye colouring and if you see very dark then the odds are you do have a male. Ofcourse this applies to our pets, not any bird acquired for breeding purposes.
I have had so much stress the last few months I am going to have to seek help with my female. Living with her at this time is not a pleasant experience... I find I am shouting at her, using discipline that isn't always consistent... and almost dreading her temper tantrums. Most unfair to a wonderful creature who looks towards me for structure and security