Happy cockatiels:

1. High level of activity. Parrots are very active and active when they are happy, and sometimes they will jump around.

2. Make a cheerful chirp. Parrots will express their happy mood by chirping cheerfully. At this time, their chirping is very different from usual.

3. Like to interact with people. Parrots like to interact with people when they are happy. They will ask their owners to touch them. They enjoy being touched very much. They will also fly to people's shoulders and lick people's hands.

4. The feathers are fluffy. When a cockatiel is happy, its feathers will fluff up and no longer remain closed.

5. Spread your wings. If a parrot is particularly excited, it will move its armpits as if to convey a happy signal to people.