who's burying the plums?

hi all, whilst preping soil for green manure, I raked 2 perfect plums up from just under the surface...2 teeth marks, but otherwise ripe and juicy....but who put them there? I havent seen any squirrels on the allotment site, so maybe not them? but who else would do that? surely not a rat? or a hedgehog? can anyone demystify the puzzle for me please? 

Hi Ritna , I don' t grow fruit but I'm wondering if it could possibly be a jay ? Maybe the 2 teeth marks are from the birds beak.

could be I suppose, cheeky bird! hope he doesnt come back to retreive his bounty...Ive put greem manure seeds in!