Budgies (parakeets) make all kinds of different sounds, ranging from clicks to squeaks. They can whistle loud or quiet. Budgies can even learn to whistle a few different tunes if you work with them every other day.
Budgies are smaller members of the parrot family,and make many sounds parrots make,but in a higher pitch.They chirp and also imitate sounds such as speech and other birds.