On Wed, 29 Sep 2010 23:58:44 +0100, NoSpam wrote:

Pick and pickle all the walnuts. No food for critters they'll go
elsewhere (in more ways than one).

Another good suggestion, but the tree has been around for a few hundred
years and is rather large - picking them would require a sky hook.

Or a long stick but you normally pickle green walnuts so they might
not knock off that easily.

--
Cheers
Dave.