As in housing? It's a bad idea to mix a parakeet with a different bird species. Period. Some people have luck and their parakeets end up getting along with other species, but I wouldn't allow them out of my vision. If you do end up buying a conure, get a separate cage for it line their cages side by side so they each have a little company.

Also, if you haven't separated your sick parakeet from the other, please do it. You're putting your other parakeet in jeopardy.

Can you mix a canary winged parakeet with a sun conure?

I have 2 canary winged parakeets, but one of them is really sick and is dying, and i dont want to buy another one, so im looking towards a sun conure and just wondering if i could mix my parakeet with him

mixed marriages never work out. and the children suffer the most.

Try cloning. They can clone sheep, they can clone birds.