Do budgie and cockatiels get along?

Cockatiels and budgies can get along perfectly together if given enough space. You need to make sure their cage is big enough or else they may fight which is bad news for the budgie!

Cockatiels are very docile and sedate, Budgies are quite aggressive , and will terrorize Cockatiels, it has nothing to do with size, they should have separate cages, no parrot species should ever be mixed.