all sound waves reflect off other surfaces.....you have been misinformed.
Urban legend, I'm afraid.. Google "myth a duck's quack doesn't echo"
is it because they're souless arse clowns?
ok then I'll lock my answer in
Idk Ive never really sat around and listened for a quacking ducks echo.... Lol. :P
Add a response...
Oops, I didn't mean to write that. :l
"Quack, damn you!"