Jay 

Another creature which buries acorns and seeds is the Jay - a beautiful and 
rarely seen bird in it's woodland habitat.
The Jay leaves the nut or seed intact allowing it to germinate. 
The Jay is responsible for more than 40% of all new Oak
trees in the UK (because it can't find all the acorns it buries).

Even though the Jay is a member of the Crow family, I leave them unmolested.