Do squirrels and blue jays play a role in oak tree distribution?
In case anybody is curious this paper seems to answer this question.


  The obvious conclusion to follow from these summaries is that acorns
  of RO have a significant dispersal advantage. RO acorns are dispersed
  greater distances from their sources, cached more often in a wide
  variety of environments, and even show the ability, under some
  circumstances, to escape partial predation. Acorns of WO, in contrast,
  should show short dispersal distances and may be in fact adapted for
  rapid germination near or under parent trees.