awww I love birds so much, they're behavior and intellect make them fantastic companions. I have a Galah cockatoo who I just adore, she's not like any Galah I've ever met. She's so quite and calm, sometimes a little nervous but I socialize her and take her places so she's pretty used to experiencing new things. She was abused and neglected and seeing her now is such a amazing thing, you wouldn't even think she was the same bird if she didn't have such dark coloration.
She's harnessed trained and I take her all over with me, she goes on walks and to my friends houses, and to some stores that allow me to bring her inside.
Size of the bird doesn't really matter.
One question though,,,you know how people play with thier birds outside of their cage won't the bird like fly away?haha
EDIT: Nvm I forgot you have to clip thei wings.
And I would like a bird that makes nice sounds haha
You don't need to clip your birds wings, for some species of parrots it's actually vital that they're allowed to fly. My galah for example, I clipped her wings at first because she was nervous but now I'm allowing her wings to grow back in. Her species often is obese causing fatty tumors and fatty liver disease. A all seed diet and lack of proper exercise only adds to this. Having a fully flighted Galah cockatoo with a proper diet(pellets and healthy fresh and prepared foods) can change they're life span from 20-30 years to 65+ years.
Video of Rosie flying, it's much harder for her because her wings are clipped but once they grow in she'll be a pro.
Also clipped birds can fly if they're outside and there is a breeze or gust of wind. I exercise Rosie so her wings are strong once they grown in and we start recall training.