Most likely originated in S Germany, according to wiki. Augsburg [Bavaria] & the Black Forest [Baden Wurttenberg] specifically mentioned as early cuckoo-clock manufacturing regions.

It was Harry Lime, allegedly in an impro-speech by Orson Welles in The Third Man, who brought Switzerland into it as the prime candidate country. Or perhaps not...

Anyway, if Sharapova always shrieks & that other one whose name eludes me whoops, why doesn't Federer yodel? And Murray exclaim 'Hoots, och aye', for that matter? Tho yodelling was probably of Tyrolean rather than Swiss-Alpine origin...

Oh, it's all too much, too confusing ··· Think I'll go back to bed!!!

~M~