Editor #3
I disagree that this shows that you should not become a teacher. When parrots speak, it is not actually speech—it is merely mimicry. Not all species of birds are “talking birds” either. Some of the most common “talking birds” are parakeets, cockatoos and African Grey Parrots. Your bird simply may not have the ability to speak. There are plenty of websites that can tell you which species are “talking birds” and also show you how to teach your feathery friend to speak.
Being unable to teach your parrot to talk does not show an inability to teach because, for one thing, teaching a parrot is more like training a dog than teaching a child. Perhaps if you were attempting to instruct a creature more closely related to humans, such as an ape, it might be a better comparison and prediction of what you can and cannot do.
Perhaps a better judgment of your skills, or lack thereof, would be to ask you this: do you even like children? How are you with children? If babies scream at the sight of you and elementary school-age kids treat you with utter disrespect, you might want to look into another career choice. Also, there are many different age groups to teach such as pre-school, kindergarten, elementary school, junior high school and high school. If you don’t like kids or they don’t like you, you could become a teacher at an adult school or become a professor at a college or university.
In any case, there is always room for improvement, and you should not give up on your dreams. If you want to be a teacher, go out there and do all you need to do to become what you want to be.