You can see a video of them here from Mickaboo`s April 2021 online adoption fair: https://www.youtube.com/watch?v=K5rq3CKqwGM
In nature, cockatiels live in large flocks. A single bird in a cage spends much of his/her life being lonely because humans have things they must do that take them away. We therefore will only adopt a single cockatiel to a household if there is already at least one cockatiel living there. Otherwise, cockatiels must be adopted in groups of two or more.