If It Quacks Like a Duck...
Tetherd Cow Ahead World Exclusive!
Well it occurred to me eventually that you don't have to take my word for the whole Echo Of a Duck Quack debate; thanks to the wonders of modern sound techniques I can actually provide for you today, possibly for the first time ever on the internet, the quack of a duck with an echo.
So at the next office cocktail party when someone corners you over the cheese dip and expounds knowledgeably that "A duck's quack has no echo, and no-one knows why!" you can tell them that The Cow says otherwise, and send 'em on down.
A duck quacking... - mp3 file.
A duck quacking with an echo... - mp3 file.
Of course, this now must generate the obvious question: "Can the echo of a duck's quack start an avalanche?"