How buoyant are rubber ducks?

This (F)requently Qu(a)cked (Q)uestion is so important, we've written an entire article about it.  Really!  Spoiler: Rubber ducks are pretty bouyant.  Wait... that's not right.  Buoyant.  Yup.  Not bOUyant but bUOyant.  That's better!  (Teach us to use rubber ducks to spell check our pages....)