Yes.
Hello morining
Keeping a parakeet and a finch together would be a very, very bad idea. The parakett is a hookbill with a very strong beak and could easily kill the little finch. Especaially in a small cage. Even if the finch wasn't killed, he would be under constant stress from having to live with a much stronger and aggressive bird. I would NOT attempt this.
Unless the birds were raised together you will have a dead parakeet or parrolett. Parroletts are VERY VERY territorial and unless raised together the parrolett will try to chase off or kill your parakeet.
sometimes
A budgie and a parakeet are the same thing.
No you can't the Alexander parakeet.
The longer the better, and it all depends on you and your schedule. A lone parakeet will benefit and be tamer the longer you spend together.
YES, but only after the American parakeet beats the English parakeet in a revolution.
not if there freinds
if you mean catch a parakeet and put it in a cage in the zoo , then yes.
yes
Yes, I believe they can.