If you live in a country where winters are rather cold and severe you must have noticed that some birds prefer to leave their nests and travel to some other places where the temperature is above 20 degrees all year round. It sounds quite logical, but it seems like there is at least one more reason why some birds prefer to fly away and spend almost half a year witout us - they can be so good at making people laugh that they might want to change the scene just to perform their best tricks for another audience!