yes! they are patient, cute, easy to care for, but a bit stubborn
Yes, lots of people have pet budgies.
i don't know if pets have enough intelligence to sell stuff
Sure. They are small, inexpensive to care for and only make a little bit of noise during the day.
As pets, for keeping in cages or an aviary? Zebras.
Dogs, cats, hamsters, budgies, fishes.
Yes, a budgie is an excellent pet! Budgies are funny, lively, loud pets that liven up the home and are very smart! But if you are scared to get a few bites (but if you take good care of them they won't bite! *). And research a lot about budgies because they are a handful to handle! But overall, budgies are very fun! (I know this because I had two budgies :)) *When the budgie first gets on your hand, it will bite you softly to see if you can be trusted. If this does happen, it's a good thing and remember, do not make any sounds of pain or flinch and let it fly because if you do, then it will lose trust from you. But don't show too much happiness as they might think you like it and then start biting you more :).
It's nice to have a couple of each.
Yes they do! In fact I have 3 budgies of my own.
Yes, Roald Dahl did breed budgies. He bred and raised budgerigars (parakeets) as a hobby. Dahl was known to be very fond of animals and had a variety of pets throughout his life.
Yes
They are okay.
Their natural habitat is Australia, but they are often kept as household pets in many places.