Parakeet cages are generally very small, so I wouldn't recommend it. A rule of thumb is that a bird must have a large enough cage to be able to fully spread his wings, and it must be deep enough so that the bird's tail isn't damaged. Unless the parakeet cage in question is fairly large, then it should be fine. Also remember that the smaller of a cage you buy for your cockatiel, the more out-of-cage time you should provide him.
No you can't the Alexander parakeet.
not if there freinds
It really all depends on the birds personalities. Parakeets of good nature, and Cockatiels of a similar nature are good together. If there is any aggression between the two before you put them in the cage together, then keep them separated. The parakeet could get severely injured.
OK if u buy a parakeet nothing will happen.
1 Keep the cage partially covered. 2 Keep the cage in the sunlight but sheltered from wind.
No it's fine to feed cockatiels in their cage. I feed mine in their cage as they will not eat out of my hand. Just make sure you clean their cage thoroughly every day, including perches, dishes, toys etc. Also make sure your birds have vegetables and fruit to eat aswell as seeds or pellets to keep them healthy.
The spaces between the bars are probably too wide for a cockatiel. It would be able to get through them.
sometimes
A budgie and a parakeet are the same thing.
YES, but only after the American parakeet beats the English parakeet in a revolution.
if you mean catch a parakeet and put it in a cage in the zoo , then yes.
As long as its wings are clipped so that it can't escape or hurt itself flying into something, letting it out of the cage and handling it will make for a nicer bird.