Oh my Gosh!!!! your entire family, cockatiels and all, are absolutely beautiful. I don't know much about birds but the few things I've learned makes me want some. The only thing that stops me is I have too many cats.
Two experiences:
When I was young, we got chicks for Easter and the two little birds played tag with each other. I kid you not. They picked a little piece of paper off the floor & played tag. How sweet is that?!!!!
Then, I see a show called Miracle Pets & these birds will do anything from anticipate seizures to waking up a family in the middle of the night to warn them about a fire.
I am just so amazed.
Marla