Do sulphur-crested cockatoos have yellow cheeks like citrons?

Yes actually they do. Their yellow is a bit different in shade though. More of a softer yellow compared to the citron. Check out All About Cockatoos Are you thinking of getting one? Do you know anything about TOOs? Owning a TOO is like having a 2 year old child forever although some species are a little more independant.I have a Citron named Nelly and we have been together almost 15 years. There are some great TOO people at PC who will help if you have questions.

No, I'm not thinking about getting one anytime soon, if at all. I was just curious. If I do at some point do decide to get one, I will do the proper research first.

I am a rehome for a lovely sc2. They are a LOT of work though, not really like having any other kind of parrot. All About Cockatoos - MyToos.com has a lot of pretty bald information about cockatoos on their site. Just know that they are anti-breeding/buying. If you can live with that, then they are an excellent resource too.