I just learned that the German word "Flöte" can not be easily translated to the English "flute"...
The instrument here is not a flute but a recorder...
flute = Querflöte
recorder = Blockflöte
And in German the word Flöte alone is a generic term for Querflöte and Blockflöte (and probably more kinds of Flöten?), so in German it is fine to call this instrument also a Flöte, but in English I can't call it a flute.
Amazing what you can learn in ukulele forums... ;-)