How do you do this to a strict parent?

I really really REALLY want a pet bird but my mom doesn't want me to get one. What should i say to get her to let me get one?How do you do this to a strict parent?
It's not what you should say, it's how you should act...with responsibility...taking care of the things you are supposed to take care of without being told to do so.How do you do this to a strict parent?
Give her an example of how you have been responsible in the past. I'm sure her concern is who is going to take care of it. This is a credibility issure. Do you have credibility?

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