Is there any truth in the following: during a home TV interview with a former top Spanish football referee, his parrot started whistling Real Madrid's anthem?

The video of the interview is contained here. How real it is I am not sure but my experience with parrots convinces me that they are very wily creatures, very sophisticated and constantly plotting hijinks. Some of their doings could hardly be believed unless you personally witnessed it yourself. I would consider this to be authentic.

Translated: "The parrot of a former First Division referee starts singing the Madrid anthem in the middle of the Chiringuito live"

https://as.com/futbol/videos/surrealista-es-poco-un-loro-de-un-ex-arbitro-se-pone-a-cantar-el-himno-del-madrid-en-pleno-directo-v/