Myna birds have an amazing talent for mimicking the sounds around them, and that includes human voices. This particular myna goes beyond the typical parrot example of “Who’s a pretty girl?” and straight into speaking seemingly fluent Japanese.
Seriously, if this bird answered the phone, you would just think it was a Japanese person with a high-pitched voice. This must have taken a lot of training.
Screengrab via newSuperAbechan/YouTube